Senthil chloroscope is a simple, sturdy compact, portable and easy to operate comparator apparatus to estimate the residual chlorine in water.To estimate the residual chlorine in water.Ideally suited for both large and small users of water treated with chlorine. Senthil chloroscope is extensively used in municipal, panchayat and rural water systems, hospitals railways, defence establishments, factories, laboratories, farms, dairies and other field applications.
Senthil chloroscope is a simple, sturdy compact, portable and easy to operate comparator apparatus to estimate the residual chlorine in water. Ideally suited for both large and small users of water treated with chlorine.
Chloroscope is an instrument used to check the residual chlorine in drinking water. In this test, a chlorinated water sample is taken in a glass tube after the required contact period. To this, a stipulated quantity of chemical reagent is added. The color formed is observed after a few minutes. The formation of yellow color normally indicates the presence of chlorine (either combined or free) in the water. The more yellow the color, the greater is the chlorine residual. The amount of residual chlorine can be ascertained by comparing the colour developed in the glass tube with the standard color film kept in test kit. This test, is therefore, very simple and does not require much technique or time.
Senthil chloroscope is extensively used in municipal, panchayat and rural water systems, hospitals railways, defence establishments, factories, laboratories, farms, dairies and other field applications.
INSTRUCTIONS:
Remove the top lid.
Fill the left-side test tube with untreated water and insert it on color disc side.
Fill the right-side test tube with the water treated with chlorine solution or tablet.
Add 3 or 4 drops of Senthil Reagent (orthotolidine) from the special dropper bottle.
Shake well and replace it on the right-side.
Close the top cover and view against light.
Compare the colour of the water being tested with the standard colour discs.
Note the reading of the matching disc.
This value indicates the residual chlorine in PPM in the treated water.
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DTSL Temperature and Humidity Verification Chamber is used to examine some dedicated devices like hair temperature and humidity indicator(meter),dry and wet blub temperature and humidity meter,digital temperature and humidity meter,temperature and humidity transmitter and so on.The device is accurately measured by the temperature and humidity sensor and controlled by the industrial programmable controller,which can realize the automatic adjustment of the humidity in the temperature and humidity check box.With high control and test accuracy,it provides continuous,reproducible humidity measurement for scientific research and product testing.
Product Function
HD touch screen high resolution capacitive screen, clear display, multi-touch support, in line with customer touch operation habits
Wifi control remote setting of temperature and humidity, starting and stopping equipment, reading current temperature and humidity values and fluctuation status of mobile phone / pad
Status Tip Real-time calculation and display of temperature and humidity fluctuation, stable state prompt, U disk insertion detection, wifi connection prompt
Curve display temperature and humidity curve real-time display, support touch zoom translation operation, one-click screenshot save curve to U disk
Data record temperature and humidity data automatically saved to xls format, one key exported to U disk
Timing boot with timing boot function, can achieve the equipment before work timing boot, immediately after work, no need to wait.
Multi-point calibration: support temperature and humidity sensor multi-point calibration, temperature sensor indication can be segmented multi-point correction to ensure consistency with the standard device.
Segmental control: temperature and humidity are controlled by piecewise PID, fast and stable , zero overshoot, fast and stable humidity from 40 RH to 60 RH only 15 minutes
Fan speed regulation: inner cavity main circulation fan, using frequency conversion speed regulation control, through touch screen, set fan speed;
Multiple protection alarms: constant temperature tank overheating protection, liquid level alarm; rehydration tank water shortage warning; compressor overheating alarm, start and stop protection function
Communication expansion: with network interface, wifi interface, USB interface, RS-232 interface, can communicate with the PC, to achieve data reading, system settings.
Description:
Orbital Shaker-Incubator is a compact bench top ShakerIncubator used for mixing of biological liquids as well as for incubation and cultivation of biological liquids according to the operator set program. Seven interchangeable platforms allow it mix and culture samples in flask, petri dish, tubes, Elisa plates, and etc. Built in microprocessor thermo controller provides constant temperature control in the incubator chamber. It is extremely easy to operate, with very straightforward setup of temperature, speed and time.
Features:
1.Instantly display operation information(time, temperature and speed) on the LCD screen.
2.Gentle and reliable shaking with direct brushless DC motor.
3.Running safely �¢??-heating and shaking will be automatically stopped once the lid is open.
4.Seven interchangeable platforms can be chosen for variety demands.
5.Auto restart in case of power failure.
6.Over-heating protection device is included.
7.Built-in temperature calibration function.
8.Compact, only 421mmx320mm(DXW)
Parameters:
Temperature setting range 0C ~60C
Temperature control range RT.+5C ~6C
Time range 1min ~ 99h59min/
Temp. accuracy �±0.5C(@37C)
Display accuracy 0.1C
Temp. uniformity �±0.5C(@37C)
Shaking range 50~300rpm
Orbit 20mm
Platform dimension 230x230mm
Internal chamber height 182mm
Load capacity 4.0kg
Heating time �¢?�¤15min(from 25�?�°C to 60�?�°C)
Auto resume to run Yes
Power 350W
Voltage AC220V/50-60HZ
Fuse 250V 3A 20
Dimension(mm) 421x320x338
Weight(kg) 18.5
Optional Platforms
Type Description
PF-1 Platform with clamps for 5 250ml conical flask
PF-2 Platform with clamps for 9 100ml conical flask
PF-3 Platform with clamps for 10 50ml tube
PF-4 Platform with clamps for 18 15ml tube
PF-5 Platform with spring holder
PF-6 Platform for 4pcs Elisa plates or deep-well plates
PF-7 Flat platform for 5pcs petri dishes
The Strain viewer ( Ref.PSV-202) has been designed to observe and analyze the internal stress of preform and other plastic products .
Detecting object
1. Preform ( Color and colorless types )
2. Other transparent plastic products
Plastic molds , plastic bottle , cosmetic bottle , beverage bottle, plastic tray, plastic film ., etc
Specifications
Analyzer : diameter 100mm
Viewing field: 200mm*200mm
Measuring height :236mm
Overall size: 310*285*350mm
Voltage: 24VDC( with a AC/DC adaptor )
Light source: White fluorescent lamp
Weight:8KG
Measuring Principle
The internal stress plastic products has a birefringent characteristic. In other words, if there is stress inside of these types of products, light from he polarized lamp will be divided into different units, which produce optical interference phenomenon(ripple patterns) in turn.
Under white-light lamp, you can see aubergine ripples, which is caused by the presence of stress.
From the observation of colored patterns, you can see stress distribution directly, then evaluate and improve the annealing process.
The inspection of plastic molds is more complex as the colored patterns cased by stress is irregular. A similar situation may occur with glass products, which is called stress stretching. For example, a qualified mold will have a large amount of stress released by tension.
The role of full-wave plate :
The full-wave plate increases or decreases the full wavelength of a phase difference, thereby forming a colored pattern, which is easier to analyze.
Measuring Principle
The internal stress of glass and plastic products has a birefringent characteristic. In other words, if there is stress inside of these types of products, light from he polarized lamp will be divided into different units, which produce optical interference phenomenon(ripple patterns) in turn.
Under white-light lamp, you can see aubergine ripples, which is caused by the presence of stress.
From the observation of colored patterns, you can see stress distribution directly, then evaluate and improve the annealing process.
The inspection of plastic molds is more complex as the colored patterns cased by stress is irregular. A similar situation may occur with glass products, which is called stress stretching. For example, a qualified mold will have a large amount of stress released by tension.
The role of full-wave plate :
When testing glass samples without the full-wave plate, usually only black or gray shadow patterns can be seen. The full-wave plate increases or decreases the full wavelength of a phase difference, thereby forming a colored pattern, which is easier to analyze.
Function
1.Observe stress distribution in transparent plastic, glass products and optical crystals
2.Measure retardation caused by internal stress in glass and optical crystals
Detecting object
1. transparent glass products with complex construction.
such as : penicillin bottle, ampoule , mobile phone cover, light tube, light bulb,solar glass ,automobile glass,sapphire, glass container , glass handicraft
2. transparent plastic samples
plastic bottle , cosmetic bottle , beverage bottle, contact lenses, plastic tray plastic film
3. optical crystals such as quartz , SiC, calcium fluoride
Detecting methods
Sensitive Color Method and Senarmont Method
Specification
Model PSV-413
Size W291 D384 H388mm
Measuring range 0-280nm
Weight 11Kg
Viewing field W200 D200mm
Measure height Max259mm
Light Source Warm white LED light 10W
Power DC 12V(with a AC/ DC adapter)
Others:
1.Polarizing light field intensity : 120cd/m2 (10W LED lamp)
2.Polarization degree of the polarizing material: 99%
3.Polarization field: 200*200mm
4.Instrument structure: a 1/4 wave plate in the analyzer and a full-wave plate in the polarizer (wavelength 565nm). Slow axis of the plate is at 90 to the polarization plane .5.A dial on the Analyzer is used to measure the rotating angle (range: 0-180 )
Specifications :
Viewing field: 200* 200 mm
Overall size: 300*335*330 mm
Main voltage:220 V AC
Measuring space height : 234.5 mm
Light source: LED ( White and Sodium light)
Gross Weight : 10KG
Packed in 1 carton : 45*45*32cm
Application area
This Polariscope is designed to observe and analyze the distribution of internal strain in transparent plastic preforms.
It has been widely used in the quality control of various plastic rough processing products and finished bottles.
Features
1.Defects invisible to the naked eyes such as crystallization or other common defects become visible ;
2.When the plastic preform is placed on the Polarizer at a 45 angle, the colored birefringent stripes at the edge of the preform can be observed;
3.When the plastic preform is placed on the polarizer at a 0 or 90 angle, black birefringence stripes in the central part of the preform will be displayed;
4. In addition to white light, Sodium light is also used to test colored preforms or finished bottles;
5. Besides , this Strain Viewer provides 12 kinds of defect analysis functions.
12 kinds of colored defect comparison pictures will be attached to instruct related improvements in preform production process.
When it comes to anticoagulants, many people don't understand what they are used for. Simply put, anticoagulants are chemicals that prevent blood clotting. It is very commonly used in blood collection tubes used in hospitals to collect blood for testing. In different blood tests, the applicable anticoagulants are also different. Commonly used anticoagulants include EDTA, sodium citrate, heparin, etc. Let's take a look at the mechanism of action of these anticoagulants.
Because blood coagulation is divided into three main stages: first, prothrombin activator is formed; second, prothrombin activator catalyzes the conversion of prothrombin into thrombin; third, thrombin catalyzes the conversion of fibrinogen into fibrin . In these three stages, the participation of calcium ions is required, so once the chelated calcium ions are removed, the blood loses the necessary conditions for coagulation and cannot be coagulated.
1. EDTA (ethylenediaminetetraacetic acid)
There are three different forms of EDTA ethylenediaminetetraacetic acid anticoagulant, namely EDTA dipotassium, EDTA tripotassium, and EDTA disodium. Tripotassium EDTA is relatively easier to dissolve and is more popular than other forms. EDTA plays an anticoagulant effect mainly by chelating calcium ions and removing free calcium ions.
2. Sodium citrate
Sodium citrate combines with free calcium to form a sodium citrate complex, which consumes calcium to achieve anticoagulant effect. The recommended anticoagulant concentration is 3.2% or 3.8%. The ratio of anticoagulant to blood is 1:9 and 1:4. Blood after sodium citrate anticoagulation cannot be used for compressed cell volume (PCV), hemoglobin (Hb) estimation, total white blood cell count TLC, and differential white blood cell count (DLC) because citrate is used as a solution and it changes blood concentration.
3. Heparin
Heparin is an acid mucopolysaccharide with affinity for blood proteins and can be used as antithrombin and antithromboplastin. It prevents the conversion of prothrombin into thrombin, thereby playing an anticoagulant effect. As an anticoagulant, heparin is often used in emergency biochemistry and blood rheology testing.
DIODE ZENER 75V 1W DO214AC
FEATURES
Plastic package has underwriters laboratory flammability classification 94 V-0
For surface mounted applications
Low Zener impedance
Low regulation factor High temperature soldering guaranteed: 260 C/10 s at terminals
Standard voltage tolerance is ± 10 %, suffix A ± 5 % AEC-Q101 qualified
Clear, Transparent & Flexible built in air vent Chamber.
Super smooth kink resistance tube.
Very Efficient roller controller for accurate flow rate.
Latex / Latex Free Tube for flushing.
Needle size G: 18.
Sterile / Disposable / Individual Packed.
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