18-Pack PH Meter Buffer Solution Powder, PH 6.86/4.00/9.18, PH Buffer Powder for Precise & Easy PH Tester Calibration

18-Pack PH Meter Buffer Solution Powder, PH 6.86/4.00/9.18, PH Buffer Powder for Precise & Easy PH Tester Calibration Description

High Accuracy: These high-purity buffer powders ensure precise pH calibration with 0.01 pH accuracy at 25/77; They keep your pH testers and reliable for consistent results.
High Stability: These premium buffer powders maintain accurate pH values of 6.86, 4.00, and 9.18, even after long-term storage, saving you from repeated purchases for pH calibration.
Individual Packets: Includes 6 packets of pH 4.00 solution powder, 6 packets of pH 6.86 solution powder, and 6 packets of pH 9.18 solution powder; Each packet is individually sealed to ensure freshness and accuracy, making them easy to carry and store.
Quick Dissolution: These pre-measured pH buffer solution powders dissolve quickly, streamlining the calibration process; They contain no harmful substances, ensuring safe handling.
Simple to Use: Compatible with any pH tester and probe; Just empty a packet into a clean glass beaker, add 250ml deionized or distilled water, stir gently until dissolved, and you're ready for calibration.

Colour:As Shown
Material:pH calibration powder

Package Contents:
1set * ph down