Buffer standard

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Highlights

Manumesure proposes a complete range of calibration solutions for measuring pH, redox potential and conductivity. With the aim of meeting your needs as closely as possible, the range comprises certified standard solutions which can be traced to the SI units system.

pH and redox buffer solutions

Standard conductivity solutions

Complete range of standard solutions containing reference materials traceable to and compliant with NIST/DIN

Description

-pH buffer solutions

pH electrodes must be calibrated regularly to adjust the gradient and zero point (offset) according to standard values (pH buffers). Manumesure offers a highly varied range of pH buffers suitable for any application.

-NIST/DIN standard buffer solutions

pH 1.68 4.01 7.00 9.18 10.01

The formulation of these buffer solutions complies with the NIST (US National Institute of Standards and Technology) and DIN19266 specifications.

The solutions are delivered with a quality certificate containing the following information: pH value and uncertainty, traceability, batch number and use-by date. Conditioned in ready-to-use 125 mL flasks, these buffers can be stored for 2 or 3 months after opening. Accurate to ± 0.02 pH and traceable to certified reference materials, these standard solutions guarantee maximum accuracy and a link between your measurements and the international SI system.

-COFRAC-certified buffer solutions

See the webpage on COFRAC-CERTIFIED REFERENCE MATERIALS.

-Concentrated buffer solutions

pH 4.00 7.00 9.00

The concentrated pH 7.00 and 9.00 buffer solutions are delivered in 125 mL flasks and must be diluted 10-fold before use. This will give 1.25 L of the calibration solution after dilution. Caution: the pH 4.00 buffer must be diluted 5-fold before use (0.625 L of solution after dilution).

The colour-coding of the three solutions will make them easier to use and reduce the risk of confusion between the acidic, basic and neutral buffers.

-Redox buffer solutions

These buffer solutions can be used to adjust the instrument/electrode pairing to the value of the standard solution. The redox sensor must be calibrated regularly to ensure the best possible accuracy. Manumesure proposes two ready-to-use standard solutions (220 mV and 468 mV) and a concentrated solution (Michaelis solution, 146 mV). The three solutions are delivered with a quality certificate.

-Standard conductivity solutions

147 µS/cm and 1408 µS/cm standard conductivity solutions

These solutions are checked and standardized with a conductivity meter calibrated using a certified solution traceable to the NIST reference materials. They are delivered with a quality certificate containing the following information: conductivity value and uncertainty, traceability, batch number and use-by date.

12.85 mS/cm standard conductivity solution

This standard solution is checked and standardized using a conductivity meter calibrated using a standard produced according to the specifications of the IOLM (International Organization of Legal Metrology). The solution delivered with a quality certificate containing the following information: conductivity value and uncertainty, traceability, batch number and use-by date.

12.88 mS/cm standard conductivity solution

C’This is a concentrated 1mol/L KCl solution which must be diluted 10-fold in pure water to obtain a 12.88 mS/cm standard conductivity solution (at 25°C). It is possible to obtain different conductivity values by varying the dilution ratio.

All the flasks bear explanatory labels indicating the batch number and the use-by date.

References

Designation

Price

Reference

Quantity

Actions

TAMPON PH 1,68 DIN-NIST FLACON 125mL

P01700105

Quotation

TAMPON PH 4,01 DIN-NIST FLACON 125mL

P01700106

Quotation

TAMPON PH 7,00 DIN-NIST flacon 125ml

P01700107

Quotation

TAMPON PH 9,18 DIN-NIST FLACON 125mL

P01700108

Quotation

TAMPON PH 10,01 DIN-NIST 125ML

P01700109

Quotation

SOLUTION MICHAELIS 146mV FLACON 125mL

P01700110

Quotation

TAMPON CONCENTRE PH 4 125mL A DILUER

P01700111

Quotation

TAMPON CONCENTRE PH 7 125mL A DILUER

P01700112

Quotation

TAMPON CONCENTRE PH 9

P01700113

Quotation

TAMPON REDOX 220mV FLACON 125mL

P01700114

Quotation

TAMPON REDOX 468mV FLACON 125mL

P01700115

Quotation

Solution KCI 1M/I flacon 125 ml

P01700116

Quotation

TAMPON CONDUCT 0,147 mS/cm FLACON 125ML

P01700117

Quotation

TAMPON CONDUCT. 1,408mS/cm FLACON 125ML

P01700118

Quotation

TAMP.CONDUCT.12,85mS/cm FLACON 125mL

P01700119

Quotation

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