SUMMARY
Bilirubin: This test is based on the coupling of bilirubin with a diazotized dichloroaniline in a strongly acid medium. The colors range from light tan to reddish-brown.
Ketone: This test is based on the reaction of acetoacetic acid with sodium nitroprusside in a strongly basic medium. The colors range from beige or buff-pink color for a Negative reading to pink and pink-purple for a Positive reading.
Specific Gravity: This test is based on the apparent pKa change of certain pretreated polyelectrolytes in relation to the ionic concentration. In the presence of an indicator, the colors range from dark blue or blue-green in urine of low ionic concentration to green and yellow-green in urine of higher ionic concentration.
Blood: This test is based on the pseudoperoxidase action of hemoglobin and erythrocytes which catalyzes the reaction of 3,3, 5, 5-tetramethyl-benzidine and buffered organic peroxide. The resulting colors range from orange to yellow-green and dark green. Very high blood concentration may cause the color development to continue to dark blue.
pH: This test is based on the well known double pH indicator method, where bromothymol blue and methyl red give distinguishable colors over the pH range of 5-9. The colors range from red-orange to yellow and yellow-green to blue-green.
Protein: This test is based on the protein error-of-indicator principle. At a constant pH, the development of any green color is due to the presence of protein. Colors range from yellow for a �??Negative�?? reaction to yellow-green and green to blue-green for a �??Positive�?? reaction.
Urobilinogen: This test is based on a modified Ehrlich reaction in which p-diethylaminobenzaldehyde reacts with urobilinogen in a strongly acid medium. Colors range from light pink to bright magenta.
Nitrite: This test depends on the conversion of nitrate to nitrite by the action of Gram-negative bacteria in the urine. The nitrite reacts with p-arsanilic acid to from a diazonium compound in an acid medium. The diazonium compound in turn couples with 1,2,3,4-tetrahydrobenzo(h) quinolin to produce a pink color.
Leukocytes: This test is based on the action of esterase present in leukocytes, which catalyzes the hydrolysis of an indoxyl ester derivative. The indoxyl ester liberated reacts with a diazonium salt to produce a beige-pink to purple color.
Ascorbic Acid: The composition comprises of a complex chelating agent with a polyvalent metal ion in its higher state and an indicator dye that can reacts with the metal ion in its lower state to produce a color change from blue-green to yellow.
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Low-pressure sodium lamp (LPS), an electricity source of using the low-pressure sodium vapor (work vapor pressure no more than a few pa), to discharge and generate the visible light. Since the invention in 1930. The Low Pressure Sodium lamp has consistently maintained its enviable position as the most efficient light source available. Germany lighting experts OSRAM is an important member of the Siemens Group, which is one of the two largest manufacturers of the electric light.
LPS are famous for the most efficient light sources. For example, the 36W LPS system designed and collocated by our company, used in 8m-height road lamp system, the exposure on the ground is 24.5 Lux, however, the 85W energy-saving light at the same height, only has 4.4 Lux.
The life span of low-pressure sodium lamp depends on the number of ignition process, typically 18,000 hours. Light decline is smaller than other sources, can be reached 80-85% Luminous fiux at the end of the life. At present, our company has developed the LSP system with the characteristics of high light efficient, low temperature increase, lightweight, small self-consumption and large power factor and other characteristics.
Compared with the common light source, it can save the electricity above 70%. It is especially suitable for the solar road light, tunnel lighting and highland cold special environmental situation etc. Solar energy low-pressure sodium lamp system is the best choice of solar lighting field.
This is lily from a konjac factory . our products have accredit certification Brc, ISO22000 ( base on HACCP), organic ( EC, JAS,NOP). Most of our proucts have entering supermarket like Penny etc.
Our quality and service always get high praise from our customers.
If you don’t mind , we can provide free sample for you reference
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Other names:Sodium dithionite hydrate; Sodium hydrosulphite; Sodium dithionite; disodium dithionite
MF:Na2O4S2
Properties: white crystalline powder
Solubility: easily soluble in water, insoluble in alcohol
Storage methods: Should be stored in a cool, ventilated, dry. The characteristic of moisture proof, prevent sun direct illuminate, away from the fire, not contact with water or water vapor phase, not with oxidant during storage or other flammable items. Immediately after use to insert mouth, build and properly kept.
Main purpose: Widely used in printing and dyeing industry, such as cotton fabric dye and silk wool fabric bleaching. Also used in medicine, mineral processing, copperplate printing. Papermaking industry used as a bleaching agent, etc. Used as a bleaching agent, preservative, antioxidant food grade products.
Crude & refined glycerine, propylene glycol, castor oil, caustic soda, soda ash light & dense, sodium bicarbonate, acid slurry (detergent), labsa, menthol crystals, borax, boric acid, etc..Our services include end to end chemical distribution, importation, storage (we are currently opening our own warehouse in guangzhou), packaging, and the overall logistics to achieve just in time delivery of your needed raw materials based on your factory production schedule.
Manufacture and distribute specialty mineral salts and other chemicals. Including acid, alkali, metal surface finished, fertilizers, food additives water treatment, drilling fluid.
