pH Paper and Buffers
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
WTW™ Electrolytes and Cleaning Solutions
Used as refill solutions for liquid filled electrodes as well as a storage solution for all types of pH electrodes, these electrolytes and cleaning solutions are ideal for operating, storing, and cleaning electrodes. BUFFER KCL-50
Fisherbrand™ Traceable™ ISO Guide 34 Color-Coded CRM pH Buffers (Certified Reference Material)
Performs accurate, reproducible pH calibrations with color-coded bottles. Fisherbrand™ Traceable, Color-Coded buffers are Certified Reference Material pH Buffers.Compatible with all makes of pH instruments and electrodes. 500ML Traceable CRM pH 10.012, Blue
Honeywell Fluka™ Buffer solution pH 4.0 (20°C), Red colored, citric acid / sodium hydroxide / sodium chloride solution, with fungicide, Honeywell Fluka™
CAS: 1336-21-6 Molecular Formula: H5NO Molecular Weight (g/mol): 35.046 InChI Key: VHUUQVKOLVNVRT-UHFFFAOYSA-N PubChem CID: 14923 ChEBI: CHEBI:18219 IUPAC Name: azanium;hydroxide SMILES: [NH4+].[OH-] 1LT Buffer solution pH 4.0 (20oC) red colored,
Honeywell Fluka™ Buffer concentrate pH 6.00, For 500 ml buffer solution, citric acid / sodium hydroxide solution, Honeywell Fluka™
for 500 ml buffer solution, citric acid / sodium hydroxide solution 500ML Buffer concentrate pH 6.00 for 500 ml buffer solution, citric acid / sodium hydroxide solution
Mettler Toledo™ Buffer Solution Pack pH 4.01, 7.00, 9.21
BUFFER SOL PH=401/7,00/921 20ML
Thermo Scientific™ Orion™ pH Buffer Individual Use Pouches
Ensure fresh, ready to use standards for pH calibration with Thermo Scientific™ Orion™ pH Buffer Individual Use Pouches. X25 Buffer sachet PerpHect pH4 (Pack of 25)
Scharlab Buffer Solution pH 4
Synonym: Potassium hydrogen phthalate buffer BUFFERTLÖSNING PH 4 1L
Singe-Use Calibration Buffers, Color-Coded
Can be used for direct pH electrode calibration and then discarded. X6 BUFFER MIXED PACK OF 2XPH4, 7 & 10 0.01 25°C 6
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
Reagecon™ Buffer Solution, pH 10.00, Blue
Certified by an ISO 17025 accredited method and NIST traceable. Reagecon™ Buffer Solution, pH 10.00, Blue is tested at 20°C to an accuracy of ±0.01. This calibration and control buffer is specially formulated to ensure its stability, is color coded and features a twin-neck bottle design. 500ML BUFFER SOLUTION PH10.00 (BLUE) ±0.01 @ 20°C
Reagecon™ Buffer Solution, pH 4.00, Red
Certified by an ISO 17025 accredited method and NIST traceable. Reagecon™ Buffer Solution, pH 4.00, Red is tested at 20°C to an accuracy of ±0.01. This calibration and control buffer is specially formulated to ensure its stability, is color coded and features a twin-neck bottle design. 500ML BUFFER SOLUTION PH4.00 (RED) ±0.01 @ 20°C
Buffer Solution, pH 10, ACROS Organics™
500ML Buffer solution pH 10, Carbonate buffer
Alfa Aesar™ Glycylglycine, 0.2M buffer soln., pH 8.0
CAS: 556-50-3 Molecular Formula: C4H8N2O3 Molecular Weight (g/mol): 132.119 MDL Number: MFCD00008130 InChI Key: YMAWOPBAYDPSLA-UHFFFAOYSA-N PubChem CID: 11163 ChEBI: CHEBI:17201 IUPAC Name: 2-[(2-aminoacetyl)amino]acetic acid SMILES: C(C(=O)NCC(=O)O)N 100ML Glycylglycine, 0.2M buffer soln., pH 8.0 100ml
Alfa Aesar™ Sodium borate, 0.5M buffer soln., pH 8.5
CAS: 1330-43-4 MDL Number: MFCD00081185 500ML Sodium borate, 0.5M buffer soln., pH 8.5 500ml
Alfa Aesar™ Borate, 0.5M buffer soln., pH 9.5
CAS: 1330-43-4 MDL Number: MFCD00163147 250ML Borate, 0.5M buffer soln., pH 9.5 250ml
Alfa Aesar™ Sodium bicarbonate, 1M buffer soln., pH 10.0
CAS: 144-55-8 Molecular Formula: CHNaO3 Molecular Weight (g/mol): 84.006 MDL Number: MFCD00003528 InChI Key: UIIMBOGNXHQVGW-UHFFFAOYSA-M PubChem CID: 516892 ChEBI: CHEBI:32139 IUPAC Name: sodium;hydrogen carbonate SMILES: C(=O)(O)[O-].[Na+] 250ML Sodium bicarbonate, 1M buffer soln., pH 10.0 250ml
Thermo Scientific™ Orion™ pH Buffer Cubitainers™
Hold 5 gallons (19L) of pH buffer in color-coded Thermo Scientific™ Orion™ pH Buffer Cubitainers™ with easy-pour spigot. PH 7.00 BUFFER CUBITAINER 19L
Alfa Aesar™ Sodium phosphate, 0.5M buffer soln., pH 9.0
500ML Sodium phosphate, 0.5M buffer soln., pH 9.0 500ml
Fisherbrand™ ISE Reference Solutions
ISE reference solution, ideal for use with robust, reliable refillable double junction ISE electrodes. POTASSIUM CHLORIDE 4M 125ML
Alfa Aesar™ Sodium phosphate, 0.5M buffer soln., pH 8.5
500ML Sodium phosphate, 0.5M buffer soln., pH 8.5 500ml
Alfa Aesar™ ColorpHast™ Narrow pH Strips
COLORPHAST PH STRIPS 0- 2.5 PH RANGE 1UNIT
Sodium phosphate, 0.2M buffer soln., pH 7.4, Alfa Aesar™
1LT Sodium phosphate, 0.2M buffer soln., pH 7.4 1l
Alfa Aesar™ Succinate, 0.2M buffer soln., pH 6.5
CAS: 150-90-3 Molecular Formula: C4H4Na2O4 Molecular Weight (g/mol): 162.052 MDL Number: MFCD00002789 InChI Key: ZDQYSKICYIVCPN-UHFFFAOYSA-L PubChem CID: 9020 ChEBI: CHEBI:63675 IUPAC Name: disodium;butanedioate SMILES: C(CC(=O)[O-])C(=O)[O-].[Na+].[Na+] 250ML Succinate, 0.2M buffer soln., pH 6.5 250ml
Alfa Aesar™ ColorpHast™ Intermediate pH Strips
COLORPHAST PH STRIPS 7.5- 14 PH RANGE 1UNIT
Alfa Aesar™ Sodium phosphate, 0.2M buffer soln., pH 7.6
1LT Sodium phosphate, 0.2M buffer soln., pH 7.6 1l
Alfa Aesar™ Sodium citrate, 0.5M buffer soln., pH 6.5
500ML Sodium citrate, 0.5M buffer soln., pH 6.5 500ml
Acetate Buffer Solution, Fisher Chemical™
1000 ML Acetate buffer solution, pH 4.6 EU Pharmacopoeia Grade 1000mL
Alfa Aesar™ Sodium bicarbonate, 1M buffer soln., pH 9.4
CAS: 144-55-8 Molecular Formula: CHNaO3 Molecular Weight (g/mol): 84.006 MDL Number: MFCD00003528 InChI Key: UIIMBOGNXHQVGW-UHFFFAOYSA-M PubChem CID: 516892 ChEBI: CHEBI:32139 IUPAC Name: sodium;hydrogen carbonate SMILES: C(=O)(O)[O-].[Na+] 250ML Sodium bicarbonate, 1M buffer soln., pH 9.4 250ml
Alfa Aesar™ Bicarbonate, 1M buffer soln., pH 9.0
CAS: 144-55-8 Molecular Formula: CHNaO3 Molecular Weight (g/mol): 84.006 MDL Number: MFCD00003528 InChI Key: UIIMBOGNXHQVGW-UHFFFAOYSA-M PubChem CID: 516892 ChEBI: CHEBI:32139 IUPAC Name: sodium;hydrogen carbonate SMILES: C(=O)(O)[O-].[Na+] 250ML Bicarbonate, 1M buffer soln., pH 9.0 250ml
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