pH Tester Calibration Powder Buffer Solution x3 Sachet pH4.00 pH6.86 pH9.18 Kit Tool

Easy to use-no need to measure, just mix each pack with 250mL of distilled water.
A total of 15 packs-the kit includes 5 packs of 4.01, 5 packs of 6.86, and 5 packs of 9.18 calibration solution powder to meet all pH requirements.
Designed for portability-a single size pouch can be tucked in a drawer, bag or suitcase for use while traveling.
Save time and money-by mixing the powder with a can of distilled water, you can keep them longer and easier to obtain without adding packaging!
Wide range of applications-ideal for testing the pH balance of drinking water, swimming pools, aquariums, RO systems, spas or hydroponics.

If you have a swimming pool, aquarium or spa, you will need to conduct a pH test regularly. However, troublesome liquid solutions may not provide you with the accuracy you need. Let go of the measuring cup and choose the convenience of pre-measurement.

specification:
4.01 solution (potassium hydrogen phthalate)

6.86 solution (mixed phosphate)

9.18 solution (Borax)

user's guidance:
Step 1: Pour the powder completely into a clean 250mL glass beaker.
Step 2: Add 250mL of deionized water (or distilled water) to the beaker.
Step 3: Stir until the powder is completely dissolved.
Step 4: Calibrate the pH meter according to the Esee pH meter calibration procedure (for Esee PH meter: B01LWMJVPG)

Note: Not drinkable!