HM Digital PH-P4 pH 4.0 Buffer Solution - 20-PackEnsure accurate pH measurements with the HM Digital PH-P4 pH 4.0 Buffer Solution 20-Pack. This bulk pack of acidic calibration standards is essential for labs, commercial operations, and frequent users who need reliable pH meter calibration at the acidic endpoint.Key Features 20-Pack Value: Twenty 20ml packets for multiple calibrations and long-term use pH 4.0 Acidic Standard: Precise acidic point calibration for accurate pH measurements Fresh Every Time: Individual packets ensure fresh solution for each calibration Universal Compatibility: Works with HM Digital pH meters and other brands Lab-Grade Quality: Professionally formulated for reliable, consistent calibration Cost-Effective: Bulk packaging provides better value for frequent users ApplicationsIdeal for high-volume pH testing in: Commercial hydroponics operations Aquaculture facilities and fish farms Water treatment plants Food & beverage production facilities Laboratory testing environments Pool and spa service companies Agricultural testing operations Quality control departments Why pH 4.0 Calibration MatterspH 4.0 represents the acidic endpoint commonly used in two-point calibration. Calibrating your pH meter at both pH 4.0 and pH 7.0 (or pH 10.0) ensures accuracy across the full measurement range. This is especially important for applications testing acidic solutions or requiring precision in the lower pH range.Two-Point CalibrationFor optimal accuracy, use pH 4.0 buffer with pH 7.0 buffer for standard two-point calibration. For even greater precision across the full pH range, perform three-point calibration using pH 4.0, pH 7.0, and pH 10.0 buffers.Package Contents20 individual packets × 20ml pH 4.0 buffer solution = 400ml totalCompatible with HM Digital PH-200, PH-80, COM-300, and other pH meters requiring pH 4.0 calibration.
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