Standard pH9.18 Powder

Precision pH Calibration Buffer: Formulated to yield an exact alkaline reference standard of pH 9.18 (at 25°C) for precise pH electrode calibration.

Pre-Measured Powder Sachet: Seated in a sealed, moisture-proof foil sachet, eliminating measurement errors during buffer solution preparation.

Standard 250mL Preparation Volume: Formulated to dissolve into 250mL of distilled or deionized water to create a stable reference solution.

Temperature Temperature-Dependence Table: Provides predictable pH temperature reference values to allow accurate calibration across varying liquid thermal conditions.

NIST-Traceable Consistency: Manufactured to strict chemical purity standards to ensure reliable, reproducible laboratory and field calibration.

Chemical Composition: High-purity sodium tetraborate (borax) buffer powder mixture sealed in an airtight foil packet.

Technical Specifications:

Target Buffer Value: pH 9.18 ±0.01 @ 25°C.

Solution Yield: 250 mL per sachet.

Product Weight: 0.05 kg.

Form Factor: Dry white crystalline powder in sealed foil sachet.

Usage Advice: Empty the complete packet contents into a clean 250mL volumetric flask, add 250mL of distilled water, and stir thoroughly until completely dissolved before dipping your pH probe.

Maintenance: Store sealed sachets in a cool, dry place away from direct sunlight; once dissolved, keep the liquid solution in an airtight container to avoid atmospheric carbon dioxide contamination.

Essential Calibration Consumable: Position as a mandatory calibration accessory for electronic pH meters, glass pH electrode probes, and liquid pH controller boards.

Highlight High-Precision Alkaline Anchor: Emphasize how a 3-point calibration using pH 4.01, pH 6.86, and pH 9.18 buffers guarantees maximum linear accuracy across alkaline water chemistry.

Recommended Cross-Sell Add-ons: Pair with Standard pH6.86 Powder, Standard pH4.01 Powder, Standard pH4.01 + pH6.86 + PH9.18 Calibration Powder, and 0-14pH Electrode Probe Sensor BNC Connector.

Featured Collection Star: Display prominently on your Water Quality Sensors collection page as an indispensable calibration standard.