Nynelly 15pcs pH Meter Buffer Solution Powder for Precise and Easy for Precise pH Calibration Powder Solution，4.01pH,6.86pH and 9.18pH

Key features

• ✔Easy To Use: Open the packet mix the power with 250ML distilled water to star your Lab.
• ✔Workas With Any PH Meter: This buffer powder will work with any electronic pH Meter.
• ✔Stays Fresh: Individually wrapped to maintain freshness until use.
• ✔Accuracy: Produced with premium quality material under strict conditions, pre-measured.
• ✔These buffers are accurate to within ±0.01pH units @ 25°C and remain stable over long periods of time.