1. Add the water sample to the scale line of the colorimetric tube.
2. Take a test strip from the bottle and close the cap.Put the strip into the colorimetric tube with the test pads downward and close the cap of the tube.
3. Shake up and down vigorously for 10 seconds,and then place the tube upright for 90 seconds.
4. Open the tube and take out the strip. 5. Observe the color by putting the tube bottom in the blank area of the color chart and looking down through the tube,and then compare the result with the color chart.
Warning:
1. Keep wet fingers out of the bottle.
2. Close cap tightly after removing strips.
3. For best results read in natural daylight. 4. The color of unused strips might change after opening the bottle,but the change dose not affect the accuracy of test results. 5. Store in a cool dry place.
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Q: How long is your delivery time? A: It generally takes 5-10 days if the goods are in stock, or 15-20 days if the goods are not, depending on the quantity ordered. Q: Do you provide samples? Does it cost extra to request one? A: Yes, we could offer the sample for free by requests but are not responsible for the freight cost. Q: What is your terms of the payment ? A: If the payment is<=1000USD, please pay 100% in advance. If the payment is>=1000USD, please pay 30% T/T in advance, balance before shippment.If you have any other questions, please feel free to contact us. Q: Can you support OEM /ODM? A: Yes, we can make products as your request. Q:How can I get some samples? A: Please send us your address, we'll be happy to offer you samples. Q:Do you have stock? A: We understand that most customers prefer products in stock, so we'll try to keep most products in stock. However, we can keep certain products in stock because they need time to be synthesized. Q:What documents you provide? A:Usually, we provide Commerical Invoice, Packing List, Bill ofloading,Insurance,COA , and Origin certificate. If your markets have any special requirements, let us know. Q:How do you treat quality complaint? A:First of all, our quality control will reduce the quality problem to nearly zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.