pH Paper and Buffers
Mettler Toledo™ Technical pH Buffer Solutions
Provides a reliable all-around pH buffer. Mettler Toledo™ Technical pH Buffer Solution are specified to two decimal places and are traceable to NIST standards. Color-coded solution comes in a handy 250mL plastic bottle with no-fuss labels. 250 ML TECHNICAL BUFFER, PH9.21 250ML
WTW™ Standard Buffer Solution pH 4.01
With a high accuracy: ±0.02 pH, this standard buffering solution is traceably certified to PTB/NIST and therefore safe for use. BUFFER PL 4
WTW™ TEP 4 Model Buffer Solution pH 4
PH BUFFER PH4 1LFlasche)
Hanna Instruments™ pH 4.01 Calibration Buffer Solution Sachets
X25 pH buffer sachet pH 4.01 ready mixed20mL
Mettler Toledo™ Technical Buffer pH 9.21 Sachets
X30 BUFFER SACHETS PH9.21 (PACK OF 30)
WTW™ Technical Buffer Solution pH 2
BUFFER TEP 2Flasche)
WTW™ TPL 4 Model Buffer Solution pH 4
250ML 4,01 BUFFER SOLUTION
Hamilton™ DuraCal™ 7.00 Value pH Buffer
HAM BUFFER ph7 3X500ML *36 238918
Mettler Toledo™ pH buffer sol. NBS DIN 19226 pH 7.4
pH Calibration Solution with Certificate, pH 7.41250ml bottle
Hanna Instruments™ pH 7.01 Calibration Buffer Sachets
X25 Buffer solution ready mixed sachets Qty 2520 ml
WTW™ Standard Buffer Solution pH 6.87
As standard buffering solutions, the buffers pH 6.865 and PL 7 are available in 250 ml bottles with a high accuracy to ± 0.02 pH 250ML BUFFER SOLUTION 6,865
pH Buffer Solution pH 4.00, Fisherbrand™
Buffer solution pH 4,00, 500ml
Mettler Toledo™ Technical Buffer pH 2
X6 Technical buffer, pH2.00 250mL
WTW™ Standard Buffer Solutions
As a standard buffering solution, this buffer pH 9.180 (PL 7) is available in a 250 ml bottle. BUFFER PL9
Honeywell Fluka™ Buffer solution pH 7.0 (20°C), Potassium dihydrogen phosphate / disodium hydrogen phosphate, traceable to SRM from NIST, with fungicide, Honeywell Fluka™
CAS: 1336-21-6 Molecular Formula: H5NO Molecular Weight (g/mol): 35.046 MDL Number: MFCD00146206 InChI Key: VHUUQVKOLVNVRT-UHFFFAOYSA-N PubChem CID: 14923 ChEBI: CHEBI:18219 IUPAC Name: azanium;hydroxide SMILES: [NH4+].[OH-] X6 Buffer solution pH 7.0 (20oC) potassium dihydrogen phosphate / disodium hydrogen phosphate, 1L
WTW™ TPL 10 Trace Model Buffer Solution pH 10.1
TPL 10 TRACE
Buffer Solution, pH 10, ACROS Organics™
2.5LT Buffer solution pH 10, Carbonate buffer
Thermo Scientific™ Orion™ Standard All-in-One™ pH Buffer Kit
Work with ease using this color-coded pH buffer kit that includes three buffers, storage solution and a storage bottle. STANDARD ALL-IN-ONE PH BUFFER KIT, THERMO SCIENTIFic Orion, 475mL each of 4.01, 7.00 and 10.01
WTW™ TEP 10 Model Buffer Solution pH 10
PH BUFFER PH10 1LFlasche)
WTW™ TEP 7 Model Buffer Solution pH 7
PH BUFFER PH7 1LFlasche)
Hamilton™ DuraCal™ 4.01 Value pH Buffer
HAM BUFFER PH4 (VE=3X500ML) *34 238917
Hach Lange™ SINGLET™ Single-Use pH Buffer, pH 4.01 (NIST)
Singlet pH buffer solutions pH 4.01
LaMotte™ Insta-Test™ Single and Multi-Factor Test Strips
For water quality testing Anti-GSTP1
Mettler Toledo™ pH Buffer Solution NBS DIN 19226 pH 6.8
250 ML NIST/DIN 19266 BUFFER, PH6.865 250ML
Thermo Scientific™ Orion™ pH Buffer Bottles
Perform accurate, reproducible pH calibrations with color-coded Thermo Scientific™ Orion™ pH Buffer Bottles. X5 PH 6.86 BUFFER 60 ML S
Hamilton™ DuraCal™ pH Buffer Set
1500ML DURACAL pH 4/7/10 (3X500ml)
GE Healthcare Whatman™ pH Indicator Papers, CF Strips
Provides an extremely clear and accurate visual pH value using four different segments of dye-impregnated indicator papers. Whatman™ pH Indicator Papers, CF Strips use dyes that are chemically bonded to the paper and cannot be leached into solution. X100 PH STRIPS PH4,5 - 10
Mettler Toledo™ Buffer Solution Pack pH 4.01, 7.00, 9.21
BUFFER SOL PH=401/7,00/921 20ML
Mettler Toledo™ pH buffer sol. NBS DIN 19226 pH 1.69
pH buffer sol. NBS DIN 19226 pH 1,679
Hamilton™ DuraCal™ 4.01 Value pH Buffer
500ML DURACAL pH 4.01
pH papers, pH strips, pH sticks and pH test kits are used in laboratory, industrial and educational environments to qualitatively assess pH levels or monitor acid-base titrations in a range of sample types. pH buffer reference standards are used for the accurate calibration of pH meters and monitors for far more precise and quantitative pH measurement.
pH test papers are supplied either as rolls, tear-off strips, or sticks. They are impregnated with indicator dyes which change colour when dipped into the solution under test. In some products, the indicator dyes are covalently linked to the cellulose fibres to avoid bleed-out (leaching) and contamination of the test samples.
Some pH papers indicate simple acid or base conditions with a single red-blue colour change (also called litmus papers). Universal pH papers and strips contain a mix of indicator dyes which cover a range of pH values up to and including 0 to 14 in a single test. The observed colour change is checked against a comparison chart normally supplied with the papers.
Alternatively, for accurate assessment of pH, standard (reference) pH buffers are manufactured to very high degrees of precision and are used for the quantitative calibration of pH meters, electrodes and other electrochemical sensors. Standard buffers are:
- Typically supplied at fixed values of pH4.01, pH7.00 and pH10.01
- May be colour-coded for easy and quick identification
- Certified to their nominal pH and accuracy at a specified temperature (typically 20°C)
- Supplied as ready-to-use solutions or concentrates
- Contain antifungals for extended shelf life