500ml Yellow pH Buffer Solution with Measuring Chamber, pH 7,00 ± 0,01 (20 ºC)
The 500mL Labkem pH 7.00 buffer solution with measuring chamber is a yellow pH buffer solution in a twin-neck bottle for calibration and verification of pH meters at the neutral point, pH 7.00 ± 0.01 at 20 °C. This pH buffer solution with measuring chamber lets you measure out working volumes directly from the bottle, helping to protect the remaining neutral buffer from contamination.
The twin-neck design incorporates a separate measuring chamber that is filled by gently squeezing the bottle, then emptied onto the electrode or into a small vessel as required. This approach reduces contact between used buffer and the stock solution whilst simplifying electrode rinsing during the calibration sequence. The bright yellow colour coding clearly distinguishes the neutral buffer from the red acidic and blue alkaline solutions. A pH versus temperature table on the label provides set-point values for work at different temperatures, whilst certificates of analysis are traceable to NIST SRM buffers to support documented calibration procedures. When stored correctly and used with good technique, the opened bottle is typically suitable for 12–15 months.
Practical Applications
– Central reference point in two or three point pH meter calibration
– Routine verification of electrode performance before series measurements
– Teaching practicals on pH measurement, neutrality and buffer calibration
– QC applications in water analysis, environmental monitoring and general chemistry
– Use alongside pH 4 and pH 10 twin-neck buffers for full-range calibration
Key Features
– Yellow pH 7.00 ± 0.01 buffer solution at 20 °C
– 500mL twin-neck bottle with built-in measuring chamber
– Measuring chamber enables clean portioning of buffer, helping to maintain purity
– Clear colour coding to differentiate neutral buffer from acidic and alkaline standards
– Temperature compensation table printed on the label for quick adjustment
Quality & Standards
– Certificates of analysis traceable to SRM standards from NIST
– Suitable for education, research and routine analytical laboratories
– Colour coded labelling supports robust and repeatable calibration routines
– Recommended use within 12–15 months of opening when stored under appropriate conditions
Specifications
– Product type: pH buffer solution with measuring chamber
– Nominal pH: 7.00 ± 0.01 at 20 °C
– Colour: Yellow
– Volume: 500mL
– Bottle style: Twin-neck bottle with integral measuring chamber
– Label information: pH/temperature variation table, batch and expiry details
– Brand: Labbox Labkem
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