pH buffers & conductivity standards

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Affiche 25 - 48 de 427 produits
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Rotilabo® pH buffer solutions, pH 10,01, in bags, 20 unit(s) - Luminix HealthCarl Roth
Carl Roth Rotilabo® pH-bufferoplossingen
A partir de €29,84
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Calibration solution set pH 4.01 / 7.00 / 10.01APERA Instruments
APERA Instruments Calibration solution set pH 4.01 / 7.00 / 10.01
€25,00
Calibration solution set pH 4.01 / 7.00 + 3M KClAPERA Instruments
APERA Instruments Calibration solution set pH 4.01 / 7.00 + 3M KCl
€26,00
Calibration solution set pH 4.01 / 7.00APERA Instruments
APERA Instruments Calibration solution set pH 4.01 / 7.00
€16,70
Calibration solution pH 10.01 - Luminix HealthAPERA Instruments
APERA Instruments Calibration solution pH 10.01
€9,30
Calibration Solution Set pH 4.01 / 7.00 / 10.01 + 3M KCl (250ml each) + CalboxAPERA Instruments
APERA Instruments Calibration Solution Set pH 4.01 / 7.00 / 10.01 + 3M KCl (250ml each) + Calbox
€45,00
Calibration solution pH 7.00 - Luminix HealthAPERA Instruments
APERA Instruments Calibration solution pH 7.00
€9,30
C 43, Benzoic acid, NIST 39j, 30 gIKA
IKA C 43, Benzoic acid, NIST 39j, 30 g
€902,47
RH 28, ORP buffer solution pH 7, UH = 427 mV (CH), 1 bottle with 250 ml.WTW - a Xylem brand
WTW - a Xylem brand RH 28, ORP buffer solution pH 7, UH = 427 mV (CH), 1 bottle with 250 ml.
€47,80
Buffered salt solution pH 7.2Carl Roth
Carl Roth Gebufferde zoutoplossing pH 7,2
€213,95
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Buffer solution pH 9,22 ±0,01 (20 °C), ROTI®Calipure, ready to use, 500 ml - Luminix HealthCarl Roth
Carl Roth Buffer solution pH 9,22 ±0,01 (20 °C), ROTI®Calipure, ready to use, 500 ml
A partir de €31,86
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Buffer solution, pH 9.00, 1000mlWindaus
Windaus Buffer solution, pH 9.00, 1000ml
€13,07
Buffer solution pH 9.00 ±0.01 (20 °C), ROTI®Calipure, tinted blue, 250 ml - Luminix HealthCarl Roth
Carl Roth Buffer solution pH 9.00 ±0.01 (20 °C), ROTI®Calipure, tinted blue, 250 ml
A partir de €18,90
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Buffer solution pH 9,00 ±0,01 (20 °C), ROTI®Star, 500 ml, plastic - Luminix HealthCarl Roth
Carl Roth Buffer solution pH 9,00 ±0,01 (20 °C), ROTI®Star, 500 ml, plastic
A partir de €23,13
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Buffer solution pH 8.00 ±0.01 (20 °C), ROTI®Calipure ready to use, 250 ml - Luminix HealthCarl Roth
Carl Roth Bufferoplossing pH 8,00 ±0,01 (20 °C)
A partir de €21,78
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Buffer solution pH 7,413 ±0,01 (25 °C), ROTI®Calipure ready to use, 500 ml - Luminix HealthCarl Roth
Carl Roth Bufferoplossing pH 7,413 ±0,01 (25 °C)
A partir de €24,12
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Buffer solution, pH 7.00, 1000mlWindaus
Windaus Buffer solution, pH 7.00, 1000ml
€13,07
Buffer solution pH 9,18 ±0,01 (25 °C), Ph. Eur., Chapter 2.2.3, 500 ml, plastic - Luminix HealthCarl Roth
Carl Roth Buffer solution pH 9,18 ±0,01 (25 °C), Ph. Eur., Chapter 2.2.3, 500 ml, plastic
A partir de €79,25
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Buffer solution, pH 9.00, 500mlWindaus
Windaus Buffer solution, pH 9.00, 500ml
€8,05
Buffer solution pH 9.00 ±0.01 (20 °C), ROTI®Calipure ready to use, 250 ml - Luminix HealthCarl Roth
Carl Roth Buffer solution pH 9.00 ±0.01 (20 °C), ROTI®Calipure ready to use, 250 ml
A partir de €21,78
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Buffer solution pH 7,00 ±0,01 (20 °C), ROTI®Star, 500 ml, plastic - Luminix HealthCarl Roth
Carl Roth Bufferoplossing pH 7,00 ±0,01 (20 °C)
A partir de €23,72
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Buffer solutions in bags, set with 20 bags, pH 4 / 7 / 10Windaus
Windaus Buffer solutions in bags, set with 20 bags, pH 4 / 7 / 10
€31,80
Buffer solution pH 6,865 ±0,01 (25 °C), ROTI®Calipure ready to use, 500 ml - Luminix HealthCarl Roth
Carl Roth Bufferoplossing pH 6,865 ±0,01 (25 °C)
A partir de €24,12
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Buffer solution, pH 7.00, 500mlWindaus
Windaus Buffer solution, pH 7.00, 500ml
€8,05

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Questions about pH buffers & conductivity standards

Why pH buffers & conductivity standards?

A pH buffer for calibration has a stated pH at a stated temperature, often traceable. A conductivity standard has a stated conductivity. They are not general reagents and they should not be poured back into the bottle. The temperature of the measurement has to be the temperature on the label, or the meter has to compensate.

A buffer resists a change in pH when a little acid or base is added. It does that because a weak acid and its conjugate base are both present. A pH buffer used to calibrate a meter has a stated value at a stated temperature. A biological buffer such as Tris or HEPES is chosen because it holds the pH of a living system and does not poison it. Conductivity standards are the sister articles for a conductivity meter. The ions are on PubChem. Electrode calibration practice sits with EURAMET and BELAC.

This shelf belongs to Buffers & pH solutions, inside Produits chimiques de laboratoire et industriels. Luminix Health distributes this range for laboratory use.

Which shelves sit beside this one?

The neighbouring shelves are Biological buffers (Tris, HEPES, MOPS) and Buffers (other). The category above this shelf is Buffers & pH solutions.

How does ordering and shipping work?

Luminix Health distributes this range from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. Send a quote request, contact the team, or read who we are. The full brand index is on shop by brand.

Which other categories should I open?

The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology. If the article is not on the shelf, request a quote.