Versand nach: DE,
Artikelnummer:253611757070Description: Thickness: of Each One: about 0.2 mm / 0.01 inches Color: Showed as pictures Quantity: 80 pcs Material: Paper --PH 1-14 color card in each pack --Litmus paper test strips change color within 15 seconds to be matched with the pH scale color chart Details: 1--3 Shows a very high acid substance. 4--6 Shows an acidic substance. 7 Shows Neutral. 8--11 Shows an alkaline substance. 12-14 Shows a very high alkalinity. Notes: (1) The test paper can not be directly dipped into the solution. (2) The test paper can not touch the test tube mouth, bottle mouth, catheter mouth and so on. (3) When you are measuring the pH of the solution, the test paper can not be previously wetted with distilled water, because the wetting test paper is equivalent to diluting the test solution, which can lead to inaccurate measurement. The correct way is to dip in the middle of the test paper by glass rod with solution to be tested. After the test papers' discoloration, then you can compared it with the standard color card to determine the pH of the solution. (4) After taking out the test paper, the lid of the container which contains the test paper should be tightened to avoid contamination by some gas in the laboratory. Product Instructions: 1. Checking the Property of the Solution: please take a small piece of test paper on the surface of the glass or vessel, use the glass rod or plastic dripper with stain to point in the middle of the test paper, observe the color changes and compare it with the color card, and determine the property of the solution. 2. Check the Property of the Gas: firstly please wet the test paper with distilled water, stick it to one end of the glass rod, close the paper by glass rod to the gas, observe the color changes, and determine the property of the gas. Package Content: 80pcs x Wassertester Water Test Paper TeststreifenCondition:Neu, Ausländisches Produkt:Nein, Marke:Markenlos, Herstellernummer:nicht zutreffend, Modifizierter Artikel:Nein
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1--14 PH Wert Acidic Alkaline Water Test Strip Paper Teststreifen Messung 80 stk