pH buffers & conductivity standards

427 Produkte

Zeigt 241 - 264 von 427 Produkten

Zeigt 241 - 264 von 427 Produkten
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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
ab €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, Kalibratiestandaard 5 µS/cm, houdbaarheid 1 jaar, NIST traceerbaar, nauwkeurigWTW - a Xylem brand
WTW - a Xylem brand KS 5 µS, Kalibratiestandaard 5 µS/cm, houdbaarheid 1 jaar, NIST traceerbaar, nauwkeurig
€322,00
PL 9, Standaard (DIN/NBS) bufferoplossing, 1 fles met 250 ml: pH 9,180 /9,18WTW - a Xylem brand
WTW - a Xylem brand PL 9, Standaard (DIN/NBS) bufferoplossing, 1 fles met 250 ml: pH 9,180 /9,18
€31,20
PL 7, Standaard (DIN/NBS) bufferoplossing, 1 fles met 250 ml: pH 6,865 /6,87WTW - a Xylem brand
WTW - a Xylem brand PL 7, Standaard (DIN/NBS) bufferoplossing, 1 fles met 250 ml: pH 6,865 /6,87
€31,20
PL 4, Standaard (DIN/NBS) bufferoplossing, 1 fles met 250 ml: pH 4,006/4,01WTW - a Xylem brand
WTW - a Xylem brand PL 4, Standaard (DIN/NBS) bufferoplossing, 1 fles met 250 ml: pH 4,006/4,01
€31,20
PL 2, Standaard (DIN/NIST) bufferoplossing voor speciale toepassingen, 1 fles metWTW - a Xylem brand
WTW - a Xylem brand PL 2, Standaard (DIN/NIST) bufferoplossing voor speciale toepassingen, 1 fles met
€33,80
PL 12, Standaard (DIN/NIST) bufferoplossing voor speciale toepassingen, 1 fles wiWTW - a Xylem brand
WTW - a Xylem brand PL 12, Standaard (DIN/NIST) bufferoplossing voor speciale toepassingen, 1 fles wi
€34,70
pH/EC-oplossingsset pH 4,01 / 7,00 + 1,413 / 12,88 mS + 3M KCl + CalboxAPERA Instruments
APERA Instruments pH/EC-oplossingsset pH 4,01 / 7,00 + 1,413 / 12,88 mS + 3M KCl + Calbox
€50,00
pH/EC-kalibratieoplossingsset (pH 7,00, 4,01, 1413 µS, 12,88 mS), elk 250 mlAPERA Instruments
APERA Instruments pH/EC-kalibratieoplossingsset (pH 7,00, 4,01, 1413 µS, 12,88 mS), elk 250 ml
€37,00
pH/EC-kalibr. Ingestelde pH 4,01/ 7,00/ 10,01 + (84/ 1413/ 12880) µS + 3M KCl + CalboxAPERA Instruments
APERA Instruments pH/EC-kalibr. Ingestelde pH 4,01/ 7,00/ 10,01 + (84/ 1413/ 12880) µS + 3M KCl + Calbox
€80,00
pH-standaardoplossing pH 9,21 ± 0,01, 250 mlLabbox
Labbox pH-standaardoplossing pH 9,21 ± 0,01, 250 ml
€7,40
pH-standaardoplossing pH 9,21 ± 0,01, 1000 mlLabbox
Labbox pH-standaardoplossing pH 9,21 ± 0,01, 1000 ml
€10,09
pH-standaardoplossing pH 7,00 ± 0,01, 250 mlLabbox
Labbox pH-standaardoplossing 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 Labor- und Industriechemikalien. 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.