The main source of silver pollution in water bodies comes from wastewater discharged from industries such as the production of photosensitive materials, film processing, printing plate making, smelting, and metal and glass silver plating.Silver is a non-essential and non-beneficial element for the human body. After being consumed by humans, silver or silver salts will be deposited on human skin, eyes and mucous membranes, causing these parts to have a permanent and terrible blue-gray color change. Since silver and its salts have strong bactericidal properties, their trace amounts are enough to prevent the growth of bacteria, and their toxicity is weaker than mercury, they have always been regarded as a disinfectant for water. If a large amount of soluble silver salts are swallowed, due to the local astringent effect, there will be irritation and pain in the mouth, and even symptoms such as vomiting, severe stomach pain, and hemorrhagic gastritis, which will eventually lead to acute death. Silver concentrations ranging from 0.4-1mg/L can cause lesions in the kidneys, liver and spleen of mice. Principle In a weakly acidic medium and in the presence of a nonionic surfactant, silver ions in water react with o-phenanthroline and water-soluble eosin Y to form a purple-red complex. The color of the solution gradually changes from orange-yellow to purple-red as the concentration of silver ions increases.
How to use?
1.Fill a clean test tube with sample to the 15-mL mark.
2.Add the contents of one Silver () Reagent to the tube, cap the tube and shake to dissolve.
3.Add the contents of one Silver () Reagent to the tube, cap the tube and swril to dissolve.
4.Add the contents of one Silver () Reagent to the tube and swirl to dissolve, stand for 15 minutes.
5.Place the tube in 1 cm above the blank of standard card, compare the color from top to bottom, the standard color level has the
same color as observed from the tube shows the concentration of silver in the sample.
Notes:
1.Water sample pH:4.0-7.0, temperature: 20-30 oC.
2.The presence of Br-,I-,S2-can influence the test seriously.
3.In step 3, pleace don't shake, swirl the tube slowly to avoid forming foam.
Features
1.Quick and easy
Operating in accordance with the instructions, users can complete the low hardness test independently without specialized
training.5 minutes is enough to complete the analysis of one water sample.
2.Accurate and reliable
Determination results with this method are in accordance with the results with the standard method. It can be used as an alternative method to the standard method.
3.Quantitative packing
The kit can be used for 100 times. It is small, light and easy to carry.
Specification
Testing range: 0-0.05-0.1-0.2-0.3-0.4-0.5mg/L
Our service
1.Offering Sample for Testing .
2.R & D team to provide technical support.
3.Provide packaging, labeling OEM customization.
Packing & Delivery
To better ensure the safety of your goods, professional, environmentally friendly, convenient and efficient packaging services will be provided.
Company Profile
Guangdong HuanKai Microbial Sci. & Tech. Co.,Ltd. is a national high-tech enterprise under the Guangdong Institute of Microbiology which is attached to Guangdong Academy of Sciences. Since established in 1993, HuanKai has adhered to the strategy of scientific and technological innovation and development, and has formed four product lines including microbiological testing reagents and consumables, digital laboratory instruments, physical and chemical rapid water detecting products, and high-efficiency environmentally friendly cleaning agents and disinfectant, both are with independent intellectual property rights. More than 2, 000 varieties of products are widely applied in mainland China, Hong Kong, Macao, Taiwan and Southeast Asia. Huankai has developed into an important R&D production base for domestic food and other industry.
FAQ
1. Who are we?
HuanKai are based in Guangdong, China, start from 1993,there are total about 301-500 people in HKM. HuanKai has successfully established four major product lines: microbiological testing reagents and consumables, digital laboratory instruments, rapid water testing products for physical and chemical analysis, and eco-friendly cleaning and disinfection solutions. These lines boast over 2,000 different products, each protected by independent intellectual property rights.
2. How can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.What can you buy from us?
Microbial Detection Product,Peptone&Tryptone,Deydrated Culture Media,Granular Media,Microbial Air Sampler and so on.
4. Why should you buy from us not from other suppliers?
1.With strong R&D capacity and good scientific research conditions,over 30 years of experience 2.One of the largest physicochemical reagent and culture media manufactuer in China follow international standard 3.Stable high quality main raw material from Europe & strictly quality control
5. What services can we provide?
Accepted Payment Currency:USD,EUR,CNY;
Accepted Payment Type: T/T,MoneyGram,PayPal,Western Union,Cash,Escrow;
Language Spoken:English,Chinese
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