15 Pack of pH Meter Buffer Solution Powder for Precise PH Meter,ph Buffer Powder,5 Each for PH 4.01, PH 7.00 and PH 10.01 Calibration Buffer Powder

Steps for usage Step 1: Open the package and pour the powder completely into a clean, dry glass container. Step 2: Add 250 ml of deionized water (or distilled water or pure water) to the container. Step 3: Stir until the powder is completely dissolved. Step 4: Rinse the meter with pure water,put the pH meter into the solution, stir gently, and wait a few seconds. To ensure more accuracy, calibrate with 2 solutions, starting from 7.00, then 4.01 or 10.01. Specification: 5*4.01 solution (potassium hydrogen phthalate) 5*7.00 solution (mixed phosphate) 5*10.01 solution (borax)

Easy to use: Mix the pH Meter Buffer Solution Powder with 250ML distilled water or Ultra pure water/ pure water,put the pH meter into the solution, stir gently, and wait for a few seconds to get the result
Accurate:at 25°C ,pH buffer calibration solution powder accuracy is ±0.01pH,precise
5 packets of pH 4.01 Solution powder, 5 packets of pH 7.00 Solution powder,5 packets of pH 10.01 Solution powder , cost-effective and flexible for using
Save Money:One packet of ph buffer powder yields 250ml of calibration solution.The remaining unused pH calibration solution can be sealed storage for 20 days for future use
Wide range of applications: testing the pH balance of drinking water, aquariums, swimming pools, spas or hydroponics