Rdo-200 fluorescence dissolved oxygen sensor application Widely used in online dissolved oxygen monitoring for power plant, chemical, industrial wastewater, pharmaceutical, biochemical and water treatment industry. Rdo-200 fluorescence dissolved oxygen sensor feature * 0-20mg/l or 0-200% saturation * 0 ~ 50'c; ip68 protection rating * no film, no electrolyte, not polarization * no consumption of oxygen, the flow rate is not affected * built-in temperature sensor, automatic temperature compensation * chemical interference from sulfide * in drift, fast response, more accurate measurements * maintenance-free longer applicable period, lower cost * fluorescent cap replacement is simple * supports rs-485, modbus protocol Technical instructions Do range: -20mg/l 0-20 mg/l or 0-200% saturation Reaction time: 10 sec Degree of protection: ip68 Do accuracy±1% Sensor drift:
2-Naphthol Basic information Chemical Properties Application Preparation Product Name: 2-Naphthol Synonyms: c.i.37500;c.i.azoiccouplingcomponent1;c.i.developer5;Developer A;Developer AMS;Developer BN;developera;developerams CAS: 135-19-3 MF: C10H8O MW: 144.17 EINECS: 205-182-7 Product Categories: Fluorescent;Naphthalene;pigments;alcohol;MICROCIDIN;Color Former & Related Compounds;Developer;Functional Materials;Intermediates;Aromatic Compounds;Alphabetical;Bioactive Small Molecules;Biochemicals and Reagents;Building Blocks;C9 to C20+;Cell Biology;Chemical Synthesis;Fluorescent Indicators and Probes;Fluorescent Probes;Labels;N;Organic Building Blocks;Oxygen Compounds;Particles and Stains;pH Sensitive Probes and Indicators;Phenols;Dyestuff Intermediates;Aromatics Mol File: 135-19-3.mol 2-Naphthol Chemical Properties Melting point 120-122 C(lit.) Boiling point 285-286 C(lit.) density 1,28 g/cm3 vapor density 4.97 (vs air) vapor pressure 10 mm Hg ( 145.5 C) refractive index 1.5762 (estimate) Fp 153 C storage temp. Refrigerator solubility methanol: soluble1g/10 mL, clear, colorless to light yellow pka 9.51(at 25C) form Powder, Crystals or Granules color White PH Range Non& uorescence (8.5) to blue & uorescence (9.5) Water Solubility 1 g/L (20 C) �»max 226nm, 265nm, 275nm, 286nm, 320nm, 331nm Merck 14,6384 BRN 742134 Stability: Stable. Combustible. Dust may form explosive mixture with air. Incompatible with strong oxidizing agents, phenol. Major Application Display device, semiconductors, photoimaging materials, inks, toner, chalk, security paper, molding materials, tin plating method, rubber, adhesive, leather, detergent, hair dyes, antimitotic drug, anticancer agent, antiinflammatory agent, treatment of acne vulgaris (pimples) and other dermal ailments (rashes, scratches, blemishes, hair loss), disorders InChIKey JWAZRIHNYRIHIV-UHFFFAOYSA-N CAS DataBase Reference 135-19-3(CAS DataBase Reference) NIST Chemistry Reference 2-Naphthalenol(135-19-3) EPA Substance Registry System 2-Naphthalenol (135-19-3) Safety Information Hazard Codes Xn,N Risk Statements 20/22-50 Safety Statements 24/25-61 RIDADR UN 3077 9/PG 3 WGK Germany 2 RTECS QL2975000 F 8 Autoignition Temperature 430 C TSCA Yes HazardClass 9 PackingGroup III HS Code 29071590 Hazardous Substances Data 135-19-3(Hazardous Substances Data) Toxicity LD50 orally in Rabbit: 1960 mg/kg LD50 dermal Rabbit > 10000 mg/kg 2-Naphthol Usage And Synthesis 2-Naphthol Preparation Products And Raw materials
1.Name: Sodium nitrate Chemical formula: NaNO3 Formula weght:84.99 2.Property: (1) ordinary sodium nitrate: white little crystals or light yellow (2) dry powder sodium nitrate: non-caking, showing loose status. Density:2.257. It is liable to deliquesce, dissolved in water, soluble in liquid ammonia, slightly soluble in ethanol and glycerin, Melting Point:308. While being heated up to about 380 it will decompose and release oxygen and turn into sodium nitrite,as the heating goes on, it will decompose into oxygen, nitrogen and nitrogen oxide. It has strong oxidability and can cause combustion explosion if being mixed with organic substance, sulfur, sodium nitrate etc. 3. Usage:Â it has been wildly used in the glass industry, dye, dynamite, metallurgy, machinery, ceramic etc. 4. Specification: (Technical Standards:GB/T4553-2002) Item Unit High G. First G. Qualified G. Dry powder G. Assay % 99.7 99.3 98.5 99.3 Sodium nitrite % 0.01 0.02 0.15 0.02 Chlorides % 0.25 0.30 -- 0.25 Water insolubles % 0.03 0.06 -- 0.03 Moisture % 1.0 1.5 2.00 0.2 Carbonates % 0.05 0.10 -- 0.1 Iron % 0.005 -- -- 0.005 Loose degree -- -- -- 95 5.Package: net 25kg/50kg net each in plasic woven inner plasic bag,or 500kg net each in flexible container.
Fluorescence Method Dissolved Oxygen Analyzer is based on the principle of fluorescence quenching, blue light irradiates to the fluorescent material to make the fluorescent material excitate red light, because the oxygen molecules can take away the energy (quenching reaction), the time and intensity of red light and the concentration of oxygen molecules are inversely proportional. By measuring, the phase difference is excitated between the red light and the reference light, then to calculate the concentration of oxygen molecules by corresponding to the internal calibration value. By adopting innovative new fluorescent technology, no membrane and electrolyte is needed, almost no maintenance, excellent performance, easy to operate, no oxygen consumed, can be applied to any occasion, including those low water cycle.
Do1200 and do1200tc dissolved oxygen sensors Item no.: do1200/h, do1200/t, do1200tc/h, do1200tc/t, 971598, 971598tc Reliable galvanic sensing technology Compact 12mm design For portable, laboratory or on-line use Optional integral atc element Easy to use pre-membraned replacement caps The do1200 and do1200tc feature dependable galvanic technology. No warm up period is required. Sensors are supplied with fast responding hdpe membrane caps for portable or lab use. Optional ptfe membrane caps are available for on-line or heavy uv exposure applications. Fill solution is replaceable when required. The do1200 is supplied without internal temperature compensation. The do1200tc can be supplied with a variety of user defined atc elements. Standard cable length is 2.5 feet with a tinned lead termination. Longer cable lengths and connectors are available for an additional charge. For on-line use, our fc75p 3/4 inch in-line fitting may be ordered to provide for mounting into 3/4 inch fnpt threaded tees. Do1200 laboratory dissolved oxygen sensor specifications Range: 0-20 mg/l Body material: epoxy and noryl Max temperature: 50 degrees c Saturation output: Hdpe = 47mv +/- 9mv, Ptfe = 33mv+/-9mv Pressure: 0-100 psig (7.5 bar) Calibration: single point in air Response time: after equilibration, hdpe 1 minute for 2mv, ptfe 2 minutes for 2mv
Product name: Medical Sodium Chloride HS Code: 2501000050 Packing: 25 or 50 kg bags Sodium chloride on a dry basis: 99-100.5% Sulfate content SO4: less than 200 ppm Magnesium and alkaline earth metals in the form of calcium (C4) less than 100 ppm Aluminum content AL: less than 0.2 ppm Iron content Fe: less than 2 ppm Heavy metals (in the form of lead) Pb: less than 5 ppm Bromide content Br: less than 100 ppm Phosphate content PO4: less than 25 ppm Potassium K: less than 500 ppm Bacterial endotoxins: less than 5 international unite/gram (
Product name: Sodium Chloride 100.5% HS Code: 2501000050 Packing: 25 or 50 kg bags Sodium chloride on a dry basis: 99-100.5% / pharmaceutical salt Sulfate content SO4: less than 200 ppm Magnesium and alkaline earth metals in the form of calcium (C4) less than 100 ppm Aluminum content AL: less than 0.2 ppm Iron content Fe: less than 2 ppm Heavy metals (in the form of lead) Pb: less than 5 ppm Bromide content Br: less than 100 ppm Phosphate content PO4: less than 25 ppm Potassium K: less than 500 ppm Bacterial endotoxins: less than 5 international unite/gram (
WQ401 Dissolved Oxygen Sensor Description WQ401 Dissolved Oxygen Sensor is a rugged and reliable water oxygen measuring device. The WQ401's sensor is attached to 25 ft of marine grade cable, with lengths up to 500 ft available upon request. The sensor's output is 4-20 mA with a three wire configuration. The sensor's electronics are completely encapsulated in marine grade epoxy within a stainless steel housing. The unit uses a removable shield and dissolved oxygen element for easy maintenance. WQ401 Dissolved Oxygen Sensor Features * Measure dissolved oxygen in situ * Fully encapsulated electronics * 4-20 mA output * Marine grade cable with strain relief * Stainless steel housing * Replaceable dissolved oxygen element WQ401 Dissolved Oxygen Sensor Applications Ideal for stream and lake monitoring, aquaculture studies, baseline analyses, mitigation monitoring, and other environmental applications. WQ401 Dissolved Oxygen Sensor Specifications * Output: 4-20 mA * Range: 0 to 100% saturation, 0 to 8 ppm, temperature compensated to 77'F (25'C) * Accuracy: ±0.5% full scale * Maximum Pressure: 40 psi * Operating Voltage: 10 to 36 VDC * Current Draw: 15.5 mA plus sensor output * Warm-up Time: 10 seconds minimum * Operating Temperature: -40 to +131'F (-40 to +55'C)
OPTOD Optical Dissolved Oxygen & Temperature Sensor Optical technology: The OPTOD sensor is based on luminescent optical technology and is approved by the ASTM International Standard Method D888-05. Without calibration requirements, and thanks to an ultra low power technology, the OPTOD sensor is suitable for field work as well as long and short term monitoring. With no oxygen consumption, this technology gives an accurate measure in all situations, even in very low oxygen concentrations. Digital Technology: The "smart" OPTOD sensor stores calibration and history data within the sensor. This allows you a "plug and play" system without re-calibration. Digitally optimised measurement technology * Optical luminescence technology requires minimal maintenance * Digital sensor: Modbus RS-485 * No calibration required and therefore little to no drift occurs * Robust and Watertight OPTOD Optical Dissolved Oxygen & Temperature Sensor Applications * Industrial effluent treatment * Urban waste water treatment * Surface water monitoring * Drinking water OPTOD Optical Dissolved Oxygen & Temperature Sensor Specifications * Measurement ranges: 0.00 to 20.00 mg/L * Resolution: 0,01 * Accuracy: +/- 0.1mg/L, +/- 0.1 ppm, +/- 1 % * Response time: 90% of the value in less than 60 seconds * Temperature compensation: Via CTN * Operating temperature: -10°C to +60'C * Signal interface: Modbus RS-485 (standard) and SDI-12 (option) * Sensor power-supply: 5 to 12 volts
Do1200 and do1200tc dissolved oxygen sensors Item no.: do1200/h, do1200/t, do1200tc/h, do1200tc/t, 971598, 971598tc Do1200 dissolved oxygen sensor features * reliable galvanic sensing technology * compact 12mm design * for portable, laboratory or on-line use * optional integral atc element * easy to use pre-membraned replacement caps Do1200 dissolved oxygen sensor description The do1200 and do1200tc feature dependable galvanic technology. No warm up period is required. Sensors are supplied with fast responding hdpe membrane caps for portable or lab use. Optional ptfe membrane caps are available for on-line or heavy uv exposure applications. Fill solution is replaceable when required. The do1200 is supplied without internal temperature compensation. The do1200tc can be supplied with a variety of user defined atc elements. Standard cable length is 2.5 feet with a tinned lead termination. Longer cable lengths and connectors are available for an additional charge. For on-line use, our fc75p 3/4 inch in-line fitting may be ordered to provide for mounting into 3/4 inch fnpt threaded tees. Do1200 dissolved oxygen sensor specifications * range: 0-20 mg/l * body material: epoxy and noryl * max temperature: 50 degrees c * saturation output: hdpe = 47mv +/- 9mv, ptfe = 33mv+/-9mv * pressure: 0-100 psig (7.5 bar) * calibration: single point in air * response time: after equilibration, hdpe 1 minute for 2mv, ptfe 2 minutes for 2mv
DRIED FISH MAW- SINGLE PCS Specification: Weight : 180-200 pcs/ kg Packing: 25kgs/ bag Fish maw is the dried form of fish air bladder. Fish maw can be divided into king fish maw, premium fish maw, grass seabass fish maw and fried fish maw in general. King fish maw and premium fish maw are the best quality and most valuable amongst the four types. Grass Seabass fish maw and fried fish maw are however more popular due to their economical pricing. Fish maw is also graded by their gender. Male fish bladder has thicker body and is soft and smooth, not easily dissolved in the mouth while female bladder has a thinner body
Do sensor dissolved oxygen sensor water quality control sensor kds-25b Model number: kds-25b Description The gs yuasa dissolved oxygen sensor kds-25b is a unique Galvanic cell type sensor which was developed for water quality Control. Its most notable features are long life expectancy and it Is not influenced by co2. Features: * long life * virtually no influence from co2 * no external power supply required for sensor Operation * no warmup time is required Applications: * water quality control
Wq-fdo optical dissolved oxygen sensor description The wq-fdo optical dissolved oxygen transmitter is an instrument designed for measuring dissolved oxygen concentrations in liquids. The wq-fdo optical dissolved oxygen transmitters were developed to meet different requirements ranging from surface water monitoring programs to harsh waste water applications. The optical dissolved oxygen transmitter has been specifically designed to meet the demanding requirements of the environmental monitoring and scientific research sectors, providing long term, accurate and reliable dissolved oxygen measurement. The wq-fdo optical dissolved oxygen transmitter has extremely low power requirements and a 4-20 ma output making it ideal for incorporation into remote environmental monitoring installations. Wq-fdo optical dissolved oxygen sensor features * extremely fast and precise optical do sensor - outstanding for field and lab applications * proven green light technology for long operation life of sensor * beveled membrane repells interference that can be caused by air bubbles * universal protective armoring available * low power consumption and low maintenance * simple to integrate and operate * one year sensor life Wq-fdo optical dissolved oxygen sensor applications Long and short term monitoring for streams, rivers, lakes, aquaculture, thermocline profiling, industrial outfalls, wastewater, scientific research, homeland security, the food and wine industry, and more. Wq-fdo optical dissolved oxygen sensor specifications * dissolved oxygen accuracy: â± 0.5 % of value * dissolved oxygen repeatability: 0.01 ppmâ?? * temperatureâ?? accuracy: â±0.2'f (â±0.1'c)â?? * temperatureâ?? resolution:â?? 0.02'f (0.01'c)â?? * temperatureâ?? range: 32 to 122'f (0 to 50'câ?? * max pressure: 35 psi (25m/82ft water depth)â?? * operating voltage: 10-30 vdcâ?? * warm up time: 6 sec. Min, 8 recommendedâ??
Y504-a dissolved oxygen sensor description The sensor is based on optical fluorescence lifetime quenching technique. Its technical procedure meets astm d888-09 standard for optical sensing of dissolved oxygen. This online sensor is developed to integrate with yosemite wireless monitoring system. Its rugged design and large measurement range make it ideal for sampling, flow cell, ground water and waste water measurements. Y504-a dissolved oxygen sensor applications Fish farmer, waste water plant, river, stream, and ocean monitoring Y504-a dissolved oxygen sensor feature , 0-20mg/l or 0-200% saturation , 0~50'c; ip68 rating , membraneless, no electrodes design , no oxygen consumption , flow independent , automatic temperature compensation , no h2s interference , low drift, fast response, and more accurate , low maintenance, low operating cost , easy sensor cap replacement , rs-485; modbus protocol compatible Y504-a dissolved oxygen sensor technical specifications , range, : 0-20mg/l or 0-200% saturation, , response time: 10 sec , housing ip rating: ip68, , accuracy: 1%, , drift:
Submersible galvanic dissolved oxygen sensors Item no.: do6400/h, do6400/t, do6400tc/h, do6400tc/t, do6441/t, do6442/t, Do7400/h, do7400/t, do7400tc/h, do7400tc/t, do7441/t, do7442/t Large solution capacity for long term deployment Models with and without temperature sensor Easy installation and maintenance Mv or 4-20ma output models available The do6400 & 7400 series dissolved oxygen sensors feature a large capacity electrolyte holder, positive fit, easy to replace membrane and dependable galvanic cell technology for long term deployment. The body design ensures a good grip when wet. Ideal for aquaculture and wastewater monitoring applications, these sensors require minimal maintenance. Ptfe or high-density polyethylene (hdpe) membranes are available. 2 replacement membranes, installation tool and electrolyte are included. Additonal maintennace parts are in convenient kits (see ordering information). Sensors with mv output as well as built-in 4-20ma output in 0-100% and 0-200% saturation range are available. Dissolved oxygen sensors specifications O2 measuring range: Do6400, do6400tc (0.5-20ppm), do6441(0-100%), do6442(0-200%) Do7400, do7400tc (0.03-20ppm), do7441(0-100%), do7442(0-200%) Body: material noryl Cathode: silver Anode: zinc (do6400 series), lead (do7400 series) Maximum temperature: 50 degrees c Power requirement: 12-36v dc (for models do6441, do6442, do7441 and do7442 only )
Wq-fdo optical dissolved oxygen sensor description The wq-fdo optical dissolved oxygen transmitter is an instrument designed for measuring dissolved oxygen concentrations in liquids. The wq-fdo optical dissolved oxygen transmitters were developed to meet different requirements ranging from surface water monitoring programs to harsh waste water applications. The optical dissolved oxygen transmitter has been specifically designed to meet the demanding requirements of the environmental monitoring and scientific research sectors, providing long term, accurate and reliable dissolved oxygen measurement. The wq-fdo optical dissolved oxygen transmitter has extremely low power requirements and a 4-20 ma output making it ideal for incorporation into remote environmental monitoring installations. Wq-fdo optical dissolved oxygen sensor features * extremely fast and precise optical do sensor - outstanding for field and lab applications * proven green light technology for long operation life of sensor * beveled membrane repells interference that can be caused by air bubbles * universal protective armoring available * low power consumption and low maintenance * simple to integrate and operate * one year sensor life Wq-fdo optical dissolved oxygen sensor applications Long and short term monitoring for streams, rivers, lakes, aquaculture, thermocline profiling, industrial outfalls, wastewater, scientific research, homeland security, the food and wine industry, and more. Wq-fdo optical dissolved oxygen sensor specifications * dissolved oxygen accuracy: +/- 0.5 % of value * dissolved oxygen repeatability: 0.01 ppm, * temperature, accuracy: +/-0.2'f (+/-0.1'c), * temperature, resolution:, 0.02'f (0.01'c), * temperature, range: 32 to 122'f (0 to 50'c, * max pressure: 35 psi (25m/82ft water depth), * operating voltage: 10-30 vdc, * warm up time: 6 sec. Min, 8 recommended,
Y504-A Dissolved Oxygen Sensor Description The sensor is based on optical fluorescence lifetime quenching technique. Its technical procedure meets ASTM D888-09 standard for optical sensing of dissolved oxygen. This online sensor is developed to integrate with Yosemite wireless monitoring system. Its rugged design and large measurement range make it ideal for sampling, flow cell, ground water and waste water measurements. Y504-A Dissolved Oxygen Sensor Applications Fish farmer, waste water plant, river, stream, and ocean monitoring Y504-A Dissolved Oxygen Sensor Feature * 0-20mg/L or 0-200% Saturation * 0~50 'C; IP68 rating * Membraneless, no electrodes design * No oxygen consumption * Flow Independent * Automatic temperature compensation * No H2S Interference * Low Drift, fast response, and more accurate * Low Maintenance, low operating cost * Easy sensor cap replacement * RS-485; MODBUS protocol compatible Y504-A Dissolved Oxygen Sensor Technical Specifications * Range: 0-20mg/L or 0-200% Saturation * Response Time: 10 sec * Housing IP Rating: IP68 * Accuracy: 1% * Drift: -
GS Yuasa Dissolved Oxygen sensor KDS-25B Features: * Long life * Virtually no in�uence from CO2 * No external power supply required for sensor operation * No warmup time is required Applications: * Water quality control The GS Yuasa Dissolved Oxygen Sensor KDS-25B is a unique galvanic cell type sensor which was developed for water quality control. Its most notable features are long life expectancy and it is not influenced by CO2. Specification: Measurement range: 0~80mg/L dissolved oxygen Accuracy in water at 25'C±1'C: ±5% (full scale) Operating conditions Atmospheric pressure: 81~203kPa (corresponds to 10m of water depth) Temperature: 5~35'C Relative humidity: 10 ~ 90%R.H. (no condensation) Thermal time constant: 10 min. or less Initial output voltage in clean air under standard test conditions: 8.0~15.0mV Standard test conditions Atmospheric pressure: 1013±5hPa Temperature: 25'C±1'C Relative humidity: 60±5%
Product Name: Dimethyl Sulfoxide Other Name: sulfinylbis (methane);DMSO;DIMETHYL SULFOXIDE;DIMETHYL SULPHOXIDE Molecular Formula: C2H6OS Molecular Weight: 78.13 Appearance: Corlorless liquid or corlorless crystals Purity: 99% CAS Number: 67-68-5 EINECS number: 200-664-3 Supplier: ZHENYIBIO Dimethyl sulfoxide (abbreviated DMSO) is a sulfur-containing organic compound; molecule formula: (CH3) 2SO; It exhibits as colorless, odorless, hygroscopic and flammable transparent liquid at room temperature. It has both high polarity as well as high-boiling point. It also has aprotic and water-miscible characteristics. It has low toxicity, good thermal stability, and is not miscible with paraffin. It is soluble in water, ethanol, propanol, ether, benzene and chloroform and many other kinds of organic substance and is called as the "universal solvent." It is a common organic solvent which has the strongest dissolving ability. It can dissolve most the organic compounds including carbohydrates, polymers, peptides, as well as many inorganic salts and gases. It can dissolve certain amount solute whose weight is equals to 50-60% of itself (other common solvents usually only dissolve 10-20%), so it is very important in the sample management as well as high-speed screening of drugs. Under certain conditions, contact between dimethyl sulfoxide and chloride can even lead to explosive reaction.
Agricultural urea N46 46% Properties of urea Urea, also known as carbamide, carbamide and urea. Pure urea is white, tasteless, odorless, needle shaped or prismatic crystal, with a melting point of 132.7 â?? under normal pressure. It is hygroscopic, deliquescent, hydrolyzable, and weakly alkaline. It is made into compound fertilizer with acid fertilizer. Urea is an organic compound composed of carbon, nitrogen, oxygen and hydrogen. It is a white crystal. Urea is one of the simplest organic compounds. The most important use of urea is as fertilizer. Its nitrogen content is more than 46%. After being converted into ammonium carbonate in soil, urea is hydrolyzed and absorbed by plants. It is the nitrogen fertilizer with the highest nitrogen content at present. Molecular formula of urea: CO (NH2) 2, molecular weight 60.06, density 1.335g/cm �³ï¼? The melting point is 132.7 â??. Soluble in water and alcohol, insoluble in ether and chloroform. It is slightly alkaline. It can react with acid to form salt. It has hydrolysis. Condensation reaction can be carried out at high temperature to produce biuret, triuret and cyanuric acid. Heat to 160 â?? and decompose to generate ammonia gas and turn into cyanic acid at the same time. Urea can be hydrolyzed into ammonia and carbon dioxide under the action of acid, alkali and enzyme (acid and alkali need to be heated). Unstable to heat, heat to 150 â??ï½? 160 â?? to deamination to biuret. Urea is easily soluble in water, 105g can be dissolved in 100ml water at 20 â??, and the aqueous solution shows neutral reaction. There are two kinds of urea products: crystalline urea is white acicular or prismatic crystal with strong hygroscopicity; Granular urea is a translucent particle with a particle size of 1~2mm, which has a smooth appearance and improved moisture absorption. Urea is a physiologically neutral fertilizer, which does not leave any harmful substances in the soil and has no adverse effects after long-term application. However, a small amount of biuret, also known as biuret, will be produced when the temperature is too high during granulation, which has an inhibitory effect on crops. Urea is molecular before conversion and cannot be adsorbed by soil, so it should be prevented from being lost with water; The ammonia formed after conversion is also volatile, so urea should also be deeply covered with soil. Urea is the first synthetic organic substance and widely exists in nature, such as 0.4% urea in fresh human feces. The new version of national standard GB/T2440-2017 for urea has been officially implemented since July 1, 2018. Compared with the replaced 2001 standard, certain adjustments have been made. New standard GB/T2440-2017
