pH buffers & conductivity standards

427 produits

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Affiche 241 - 264 de 427 produits
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pH buffer solution N.I.S.T-Certificate in patent bottle, 250 ml pHHecht
Hecht pH buffer solution N.I.S.T-Certificate in patent bottle, 250 ml pH
€12,05
pH buffer solution N.I.S.T-Certificate in patent bottle, 250 ml pH 7,00±0,01/25°Hecht
Hecht pH buffer solution N.I.S.T-Certificate in patent bottle, 250 ml pH 7,00±0,01/25°
€12,05
pH buffer solution N.I.S.T-Certificate in patent bottle, 250 ml pH 4,01±0,01/25°Hecht
Hecht pH buffer solution N.I.S.T-Certificate in patent bottle, 250 ml pH 4,01±0,01/25°
€12,05
Diethylammonium phosphate buffer solution pH 6.0Carl Roth
Carl Roth Diethylammonium phosphate buffer sol., pH 6.0, Reag. Ph. Eur. 4.1.3, 4002300
€118,25
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PAR-4 Agonist, human, 1 mg - Luminix HealthCarl Roth
Carl Roth PAR-4 Agonist, human, 1 mg
A partir de €105,48
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ACTIVATED CHARCOAL, POWDER in METAL CAN, 1 kgAltmann Analytik
Altmann Analytik ACTIVATED CHARCOAL, POWDER in METAL CAN, 1 kg
€186,90
9.18 pH Value @25°C, (1) 500 mL bottleHanna Instruments
Hanna Instruments 9.18 pH Value @25°C, (1) 500 mL bottle
€34,00
9.18 pH (@25°C) Standard Calibration Solution, 500 mL bottleHanna Instruments
Hanna Instruments 9.18 pH (@25°C) Standard Calibration Solution, 500 mL bottle
€20,00
9.18 pH (@25°C) Standard Calibration Solution, (25) 20 mL sachetsHanna Instruments
Hanna Instruments 9.18 pH (@25°C) Standard Calibration Solution, (25) 20 mL sachets
€36,00
9.177 pH Value @ 25°C, (1) 500 mL bottleHanna Instruments
Hanna Instruments 9.177 pH Value @ 25°C, (1) 500 mL bottle
€41,00
9.000 pH Value @ 25°C, (1) 500 mL bottleHanna Instruments
Hanna Instruments 9.000 pH Value @ 25°C, (1) 500 mL bottle
€41,00
9.00 pH Value @25°C, (25) 20 mL sachetsHanna Instruments
Hanna Instruments 9.00 pH Value @25°C, (25) 20 mL sachets
€53,00
KS 5 µS, Calibration standard 5 µS/cm, shelf life 1 year, NIST traceable, accuraWTW - a Xylem brand
WTW - a Xylem brand KS 5 µS, Calibration standard 5 µS/cm, shelf life 1 year, NIST traceable, accura
€322,00
PL 9, Standard (DIN/NBS) buffer solution, 1 bottle with 250 ml: pH 9.180 /9.18WTW - a Xylem brand
WTW - a Xylem brand PL 9, Standard (DIN/NBS) buffer solution, 1 bottle with 250 ml: pH 9.180 /9.18
€31,20
PL 7, Standard (DIN/NBS) buffer solution, 1 bottle with 250 ml: pH 6.865 /6.87WTW - a Xylem brand
WTW - a Xylem brand PL 7, Standard (DIN/NBS) buffer solution, 1 bottle with 250 ml: pH 6.865 /6.87
€31,20
PL 4, Standard (DIN/NBS) buffer solution, 1 bottle with 250 ml: pH 4.006/4.01WTW - a Xylem brand
WTW - a Xylem brand PL 4, Standard (DIN/NBS) buffer solution, 1 bottle with 250 ml: pH 4.006/4.01
€31,20
PL 2, Standard (DIN/NIST) buffer solution for special applications, 1 bottle witWTW - a Xylem brand
WTW - a Xylem brand PL 2, Standard (DIN/NIST) buffer solution for special applications, 1 bottle wit
€33,80
PL 12, Standard (DIN/NIST) buffer solution for special applications, 1 bottle wiWTW - a Xylem brand
WTW - a Xylem brand PL 12, Standard (DIN/NIST) buffer solution for special applications, 1 bottle wi
€34,70
pH/EC Solution Set pH 4.01 / 7.00 + 1.413 / 12.88 mS + 3M KCl + CalboxAPERA Instruments
APERA Instruments pH/EC Solution Set pH 4.01 / 7.00 + 1.413 / 12.88 mS + 3M KCl + Calbox
€50,00
pH/EC Calibration Solution Set (pH 7.00, 4.01, 1413 µS, 12,88 mS), each 250mlAPERA Instruments
APERA Instruments pH/EC Calibration Solution Set (pH 7.00, 4.01, 1413 µS, 12,88 mS), each 250ml
€37,00
pH/EC Calibr. Set pH 4,01/ 7,00/ 10,01 + (84/ 1413/ 12880) µS + 3M KCl + CalboxAPERA Instruments
APERA Instruments pH/EC Calibr. Set pH 4,01/ 7,00/ 10,01 + (84/ 1413/ 12880) µS + 3M KCl + Calbox
€80,00
pH Standard solution pH 9,21 ± 0,01, 250 mlLabbox
Labbox pH Standard solution pH 9,21 ± 0,01, 250 ml
€7,40
pH Standard solution pH 9,21 ± 0,01, 1000 mlLabbox
Labbox pH Standard solution pH 9,21 ± 0,01, 1000 ml
€10,09
pH Standard solution pH 7,00 ± 0,01, 250 mlLabbox
Labbox pH Standard solution pH 7,00 ± 0,01, 250 ml
€7,40

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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.