Check the listing for details. Phosphorus And Phosphate Detection Test Strips 0100 Ppm vial Of 50 Strips. Condition: New. Listed at 35.29 USD. Phosphorus and Phosphate Detection Test Strips, 0-100 ppm [Vial of 50 Strips] No reagents or field kits needed for tests, all you need is one strip and no chemicals Easy to use waterproof color chart printed on every vial along with instrucions Distinct color scale with marks at 0, 30, 75, 150, and 300 PPM Phosphate (and 0, 10, 25, 50, and 100 PPM Phosphorus) Long plastic strips ensure you can keep your fingers away from what is being tested This strip has a detection limit of 5PPM Phosphorus, and can NOT be used to detect anything below that The Phosphate test strip detects orthophosphate ions and expresses the result as ppm phosphorous. To express the result as phosphate, multiply the result by 3. This test strip has a unique construction for more accurate testing. This strip has a detection limit of 5PPM Phosphorous, and can NOT be used to detect anything below that. Instructions: Dip the test strip into the solution to be tested for 1 second. Remove and compare against the color chart after 3 minutes. This strip cannot detect triphosphates. Tripolyphosphates must be converted to orthophosphate first to be detected. Remember that the Phosphate test strip gives ppm as Phosphate, not phosphate ion. The result should be corrected for any dilutions/additions and multiplied by 3 to arrive at the phosphate ion ppm. There are some interferences to consider: Arsenate and silicates above 20 ppm will cause a false reaction. These will form a yellow color. Fluoride, chlorides, and nitrites above 50 ppm will depress the phosphate reaction on the strips. Heavy metals will depress the result. Large quantities of oxidizing compounds will also depress the result. Lastly, pH and temperature will affect the results. The pH of the sample should be in the range of 6-9. For temperature, the best results are obtained in the range of 18-30 C. Above or below this the reaction on the strip can be depressed. SHIPPING - We offer FREE shipping on all orders! - We ship within 3 business days of payment, usually sooner - We use a selection of shipping services such as UPS, FedEx, USPS etc - We only ship to the lower 48 states, no APO/FPO addresses or PO Boxes allowed International buyers – please note: Import duties, taxes, and charges aren't included in the item price or postage cost. These charges are the buyer's responsibility. - Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying. - We have confidence in our products, but if you are not fully satisfied please contact us within 30 days of purchase and you will get full refund. * Order Cancellation Policy ** You can return a product for up to 30 days from the date you purchased it. 1. The seller reserves the right to cancel the special case only due to eBay cancellation fee. 2. The decision of seller is the final. 3. The seller will respond to the cancellation request within 2 business days. Please wait for the result of cancellation. 4. In case the cancellation is not completed by some reasons, the buyer can follow the options below to get the refund. 4.1 The buyer can reject the item when it arrives. 4.2 The buyer can send the item back to the seller within 30 days If the buyer receives item (USA Shipment ONLY). The seller will provide the FREE return label to the buyer when the buyer opens " Return Item" case on eBay by using the reason as "Change my mind" ONLY. 5. When buyer has placed the order. The order will be processed and completed by automatic warehouse system within 5 minutes. In case that buyer sends the cancellation request after 5 minutes of placing the order, the request will be rejected.**Sending direct message to cancel the order is not allowed for every case.* Return Policy For the return case - If buyer would like to return the items for refund or replacement, please CONTACT SELLER to receive the free return label from seller. The refund or replacement will be processed with the tracking number of return label which is provided by seller only. The other ways of return which are not approved by seller will not be processed for the refund or replacement. CUSTOMER SERVICE - We try our best to make sure every customer is completely satisfied. - If there's a problem, feel free to message us! - We're happy to help.