Features Keep dry for the rest paper .Can not indicate the Acid or alkali solution when its density was lower than 0.01% The test strip color changes must be matched with the pH scale color chart within about 15 seconds Simply press the testing strip to the object or liquid you are testing. Half second later, take out the paper and using the color chart included, compare the color change of the paper to find out the acidity level of your testing subject Description: 1.Size: 6.5 × 4cm 2.Weight: 7g Packege Includes: 2 x Set of 80pcs pH test paper
ترست بايلوت
منذ يوم واحد
منذ 3 أسابيع
