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Search Products * In order to use the cart correctly, please make sure you have cookies enabled. Traditional Calibration Standards Conductivity Calibrating Standards Conductivity Calibrating In Single Use Pouches Salinity Standards 442 Formulations ORP-Oxidation/Reduction Standards pH Buffer Standards pH Calibrating Buffers In Single Use Pouches Turbidity Calibrating Standards Combination Standards for Multi-Parameter Sondes Special Calibration Standards Total Organic Carbon Standards Low-Level Conductivity Standards High-Accuracy Conductivity Standards Particle Turbidity Standards High Temperature pH Buffer Standards High-Accuracy pH Buffer Standards Support Products Aids For Dissolved Oxygen Measurements Aids For pH Measurements Pourite Anti-Bubble Additive For Solid Media Support Documents MSDS Certificate of Analysis Technical Notes Contact Information Contact Us

pH Buffer Standards Traditional pH 4, 7 & 10, color coded. Calitech pH calibrating buffers are formulated with NIST specified ingredients including EPA registered broad-spectrum antimicrobials to assure long-life free of mold and bacterial growth. These are color coded for easy recognition. Accuracy is referenced to NIST Standard Reference Materials ±0.01 pH @ 25°C for routine buffers and ±0.002/0.005 @ 25°C for high-accuracy buffers. Traceability certificates are furnished on request. The buffers are packed in 500-mL,1, 4 & 20- liter containers. All screw capped containers include tamper evident double seal caps to prevent leakage and security. A convenience dispensing faucet is available as an extra for the 20-liter cube.. These items are always in stock for prompt shipment. In addition to the routine pH 4, 7 & 10 buffers, Calitech buffers at pH 1, 2, 3, 5, 8, 9, 11 & 12 are available on order. Please tell us what you need. These are made to the same exacting standards as the routine buffers. They are supplied uncolored and are certifiable to NIST Standards. Routine pH Buffers pH 4, 7 & 10 pH ±0.01 pH @ 25°C. color coded. High Accuracy Buffers pH 4, 7 & 10 ±0.002 @ 25°C vs. NIST SRMs. High Temperature Buffers pH 2, 4 & 7 ±0.05 pH with zero tempco from 10-99°C. Item Part Number Size Price Quantity Add to Cart pH Calibration Buffer pH 4.00 2-0400R-2 0.5 LTR $10.00   pH Calibration Buffer pH 4.00 2-0400R-3 1 LTR $16.00   pH Calibration Buffer pH 4.00 2-0400R-4 4 LTR $28.00   pH Calibration Buffer pH 4.00 2-0400R-8 20 LTR $61.50   pH Calibration Buffer pH 7.00 2-0700Y-2 0.5 LTR $10.00   pH Calibration Buffer pH 7.00 2-0700Y-3 1 LTR $16.00   pH Calibration Buffer pH 7.00 2-0700Y-4 4 LTR $28.00   pH Calibration Buffer pH 7.00 2-0700Y-8 20 LTR $61.50   pH Calibration Buffer pH 9.18 2-0918-2 0.5 LTR $10.00   pH Calibration Buffer pH 9.18 2-0918-3 1 LTR $16.00   pH Calibration Buffer pH 10.00 Blue 2-1000B-2 0.5 LTR $10.00   pH Calibration Buffer pH 10.00 Blue 2-1000B-3 1 LTR $16.00   pH Calibration Buffer pH 10.00 Blue 2-1000B-4 4 LTR $28.00   pH Calibration Buffer pH 10.00 Blue 2-1000B-8 20 LTR $61.50   pH Calibration Buffer pH 12.35 4Liter 2-12.35P-4 4 LTR $37.00   © COPYRIGHT, AURICAL COMPANY, 2007 - 2010, ALL RIGHTS RESERVED.