Buffers and Standards

Hydrogen ion buffers comprising a mixture of a weak acid and its conjugate base or vice-versa and used to stabilize pH; also diluents, washing solutions, and standard-value solutions used for a broad array of scientific calibration purposes.

The buffers used to calibrate pH meters may be certified and/or traceable to the National Institute of Standards and Technology (NIST). These buffers may also be color-coded for easy identification:

Red: pH 4.0
Yellow: pH 7.0
Blue: pH 10.0

Chromatography Standards (22,754)

Spectroscopy Standards (5,983)

General Chemistry Solutions (5,246)

Matrix Blanks and Standardization Solutions (4,367)

Life Science Buffers (3,916)

Electrochemistry Buffers (2,316)

Environmental Testing Standards (1,935)

Electrochemistry Standards (1,221)

Karl Fischer Buffers and Reagents (478)

Isotope Standards (300)

Viscosity Standards (257)

Quality Control and Proficiency Samples (205)

Kjeldahl Buffers and Reagents (108)

Gel Filtration Standards (60)

Matrix Modifiers (29)

Osmolality Standards (12)

Smoke Point Reference (9)

Polarimetric Standards (4)

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Small and Specialty Supplier (8,921)

Grade

AAS (56)
AAS Standard (11)
ACS (59)
ACS Reagent (26)
ACS/ASTM E 200/AOAC/EPA (7)
ACS/ASTM E 200/AOAC/USP Volumetric (5)
APHA/EPA (5)

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Molecular Weight (g/mol)

0.00 (1)
10.81 (14)
100.09 (33)
100.117 g/mol (1)
100.12 (1)
100.121 (1)
100.15 (1)

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Quantity

0.1 mL (1)
0.1 mol (1)
0.5 L (1)
0.5 mL (15)
0.5 mol (1)
1 Box (1)
1 Ea. (4)

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Percent Purity

≥14% (BF3) (1)
≥30% (RT) (1)
≥30% (titration) (1)
≥35% (RT) (1)
≥40% (3)
≥49% (2)
≥50% (3)

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pH

≥12 to ≤14 (6)
>11 (1)
>11.5 (3)
>12 (44)
>13 (104)
>8 (1)
<0.5 (3)

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Solvent or Matrix

#2 Diesel Fuel (12)
10% HCl (19)
10% HCl/1% HNO₃ (1)
10% HNO3 (13)
15% HCl (3)
15% HNO₃ (2)
2% HCl (29)

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Concentration

≈0.000027 M (3)
≈0.0035 M (3)
≥30% (1)
≤0.1% in nitric acid (1)
≤2.5% KCl (T) (8)
0.00017 M (3)
0.001 M KCl (1)

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Physical Form

Aqueous Solution (26)
Capsule (11)
Chemvelope (1)
Clear Liquid (1)
Clear Liquid at 20°C (2)
Crystalline (17)
Crystalline Powder (143)

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Technique

AA (472)
Acidimetry (3)
Calibrating the absorbance of spectrophotometers (1)
Calibration (7)
Calibration and Matrix Spikes (1)
Calibration and Verification (16)
Calibration and Verification of Kinematic and Dynamic Viscosity Test (15)

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Solution Type

Antigen Retrieval Reagent (1)
Aqueous (2)
Buffer (433)
Buffer, Storage (2)
Calibration (8)
Cleaning (1)
Colored pH Buffer (35)

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316 – 330 of 43,630 results

316

Buffer, Reference Standard, pH 2.00 ± 0.01 at 25°C, Ricca Chemical

Pricing & Availability
Specifications

Boiling Point	100°C
CAS	7447-40-7
For Use With (Equipment)	pH Meter and Electrode
Color	Colorless
Physical Form	Liquid
pH	2
Concentration	1X
Shelf Life	24 months
For Use With (Application)	Calibration
Solution Type	pH Buffer
Melting Point	0°C

317

Ricca Chemical Company Lead Acetate TS, 9.5% (w/v), Ricca Chemical

CAS: 6080-56-4 Molecular Formula: C4H12O7Pb Molecular Weight (g/mol): 379.30 MDL Number: MFCD00150023 InChI Key: MCEUZMYFCCOOQO-UHFFFAOYSA-L Synonym: lead acetate trihydrate,lead diacetate trihydrate,bleiazetat german,bis acetato trihydroxytrilead,unii-rx077p88ry,ccris 9031,lead acetate ii , trihydrate,lead acetate jan,acetic acid, lead +2 salt trihydrate,acetic acid, lead 2+ salt, trihydrate PubChem CID: 22456 ChEBI: CHEBI:33112 IUPAC Name: λ2-lead(2+) diacetate trihydrate SMILES: O.O.O.[Pb++].CC([O-])=O.CC([O-])=O

Pricing & Availability
Specifications

PubChem CID	22456
CAS	6080-56-4
Molecular Weight (g/mol)	379.30
ChEBI	CHEBI:33112
MDL Number	MFCD00150023
SMILES	O.O.O.[Pb++].CC([O-])=O.CC([O-])=O
Synonym	lead acetate trihydrate,lead diacetate trihydrate,bleiazetat german,bis acetato trihydroxytrilead,unii-rx077p88ry,ccris 9031,lead acetate ii , trihydrate,lead acetate jan,acetic acid, lead +2 salt trihydrate,acetic acid, lead 2+ salt, trihydrate
IUPAC Name	λ2-lead(2+) diacetate trihydrate
InChI Key	MCEUZMYFCCOOQO-UHFFFAOYSA-L
Molecular Formula	C4H12O7Pb

318

Ricca Chemical Company Bromide Standard, 1000 ppm Br^-, Ricca Chemical

CAS: 7647-15-6 Molecular Formula: BrNa Molecular Weight (g/mol): 102.89 MDL Number: MFCD00003475 InChI Key: JHJLBTNAGRQEKS-UHFFFAOYSA-M PubChem CID: 253881 ChEBI: CHEBI:63004 IUPAC Name: sodium bromide SMILES: [Na+].[Br-]

Pricing & Availability
Specifications

PubChem CID	253881
CAS	7647-15-6
Molecular Weight (g/mol)	102.89
ChEBI	CHEBI:63004
MDL Number	MFCD00003475
SMILES	[Na+].[Br-]
IUPAC Name	sodium bromide
InChI Key	JHJLBTNAGRQEKS-UHFFFAOYSA-M
Molecular Formula	BrNa

319

Ricca Chemical Company Conductivity Standard, 5000 μS/cm at 25°C (2620 ppm TDS as NaCl), Ricca Chemical

Pricing & Availability
Specifications

Boiling Point	100°C
Type	Conductivity Standard
Concentration or Composition Notes	2620ppm as NaCl
Name Note	5 mS/cm (5000 μmho/cm) at 25°C
CAS	7732-18-5
Color	Colorless
Physical Form	Liquid
CAS Min %	0.26
Chemical Name or Material	Conductivity/TDS Standard
Solution Type	Conductivity Standard
CAS Max %	0.27

320

Ricca Chemical Company Hydrogen Peroxide, 3% (w/w), Stabilized Reagent Grade, Ricca Chemical

CAS: 7722-84-1 Molecular Formula: H2O2 InChI Key: MHAJPDPJQMAIIY-UHFFFAOYSA-N IUPAC Name: peroxol SMILES: OO

Pricing & Availability
Specifications

CAS	7722-84-1
SMILES	OO
IUPAC Name	peroxol
InChI Key	MHAJPDPJQMAIIY-UHFFFAOYSA-N
Molecular Formula	H2O2

321

Ricca Chemical Company Cyanide Standard, 1000 ppm CN^-, Ricca Chemical

CAS: 151-50-8 Molecular Formula: CKN Molecular Weight (g/mol): 65.116 InChI Key: NNFCIKHAZHQZJG-UHFFFAOYSA-N PubChem CID: 9032 IUPAC Name: potassium;cyanide SMILES: [C-]#N.[K+]

Pricing & Availability
Specifications

PubChem CID	9032
CAS	151-50-8
Molecular Weight (g/mol)	65.116
SMILES	[C-]#N.[K+]
IUPAC Name	potassium;cyanide
InChI Key	NNFCIKHAZHQZJG-UHFFFAOYSA-N
Molecular Formula	CKN

322

Ricca Chemical Company EP Reference Solution Y₆, Yellow Reference Solution, Ricca Chemical

Pricing & Availability

323

Ricca Chemical Company Iodobromide TS, Ricca Chemical

Pricing & Availability
Specifications

CAS	7789-33-5
pH	<1
Packaging	Amber Glass Bottle
Grade	Laboratory

324

Ricca Chemical Company Chloride Standard, 1000 ppm Cl^- (0.0282 N), Ricca Chemical

CAS: 7647-14-5 Molecular Formula: ClNa Molecular Weight (g/mol): 58.44 MDL Number: MFCD00003477 InChI Key: FAPWRFPIFSIZLT-UHFFFAOYSA-M PubChem CID: 5234 ChEBI: CHEBI:26710 IUPAC Name: sodium chloride SMILES: [Na+].[Cl-]

Pricing & Availability
Specifications

PubChem CID	5234
CAS	7647-14-5
Molecular Weight (g/mol)	58.44
ChEBI	CHEBI:26710
MDL Number	MFCD00003477
SMILES	[Na+].[Cl-]
IUPAC Name	sodium chloride
InChI Key	FAPWRFPIFSIZLT-UHFFFAOYSA-M
Molecular Formula	ClNa

325

Ricca Chemical Company Potassium Hydroxide, 0.500 N (N/2) in Denatured Alcohol, Ricca Chemical

CAS: 1310-58-3 Molecular Formula: HKO Molecular Weight (g/mol): 56.11 MDL Number: MFCD00003553 InChI Key: KWYUFKZDYYNOTN-UHFFFAOYSA-M Synonym: potassium hydroxide,caustic potash,potash lye,potassium hydrate,hydroxyde de potassium,potassa,potasse caustique,potassium hydroxide k oh,potassium hydroxide solution,caswell no. 693 PubChem CID: 14797 ChEBI: CHEBI:32035 IUPAC Name: potassium hydroxide SMILES: [OH-].[K+]

Pricing & Availability
Specifications

PubChem CID	14797
CAS	1310-58-3
Molecular Weight (g/mol)	56.11
ChEBI	CHEBI:32035
MDL Number	MFCD00003553
SMILES	[OH-].[K+]
Synonym	potassium hydroxide,caustic potash,potash lye,potassium hydrate,hydroxyde de potassium,potassa,potasse caustique,potassium hydroxide k oh,potassium hydroxide solution,caswell no. 693
IUPAC Name	potassium hydroxide
InChI Key	KWYUFKZDYYNOTN-UHFFFAOYSA-M
Molecular Formula	HKO

326

Conductivity Standard, 50 μS/cm at 25°C (23.6 ppm TDS as NaCl), Ricca Chemical

Pricing & Availability
Specifications

PubChem CID	5234
CAS	7647-14-5
Molecular Weight (g/mol)	58.44
ChEBI	CHEBI:26710
MDL Number	MFCD00003477
SMILES	[Na+].[Cl-]
IUPAC Name	sodium chloride
InChI Key	FAPWRFPIFSIZLT-UHFFFAOYSA-M
Molecular Formula	ClNa

327

Ricca Chemical Company Nitrite Nitrogen Standard, 1000 ppm N (3285 ppm NO₂^-), Ricca Chemical

CAS: 7758-09-0 Molecular Formula: KNO2 Molecular Weight (g/mol): 85.10 MDL Number: MFCD00011408 InChI Key: BXNHTSHTPBPRFX-UHFFFAOYSA-M PubChem CID: 516910 IUPAC Name: potassium nitrite SMILES: [K+].[O-]N=O

Pricing & Availability
Specifications

PubChem CID	516910
CAS	7758-09-0
Molecular Weight (g/mol)	85.10
MDL Number	MFCD00011408
SMILES	[K+].[O-]N=O
IUPAC Name	potassium nitrite
InChI Key	BXNHTSHTPBPRFX-UHFFFAOYSA-M
Molecular Formula	KNO2

328

Buffer, Precision Reference Standard, pH 10.000 ± 0.005 at 25°C, Ricca Chemical

Standardized against NIST-certified pH references. High-Accuracy pH Buffer solutions are for use with meters with 0.001 resolution.

Pricing & Availability

329

Ricca Chemical Company Total Suspended Solids (TSS) Standard, 100 ppm TSS (Gravimetric, Dried at 103-105°C), Ricca Chemical

CAS: 9004-34-6

Pricing & Availability
Specifications

CAS	9004-34-6

330

Ricca Chemical Company EP Reference Solution Y₂, Yellow Reference Solution, Ricca Chemical

Pricing & Availability

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Buffers and Standards

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Ricca Chemical Company Lead Acetate TS, 9.5% (w/v), Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Bromide Standard, 1000 ppm Br-, Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Conductivity Standard, 5000 μS/cm at 25°C (2620 ppm TDS as NaCl), Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Hydrogen Peroxide, 3% (w/w), Stabilized Reagent Grade, Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Cyanide Standard, 1000 ppm CN-, Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company EP Reference Solution Y6, Yellow Reference Solution, Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Iodobromide TS, Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Chloride Standard, 1000 ppm Cl- (0.0282 N), Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Potassium Hydroxide, 0.500 N (N/2) in Denatured Alcohol, Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Conductivity Standard, 50 μS/cm at 25°C (23.6 ppm TDS as NaCl), Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Nitrite Nitrogen Standard, 1000 ppm N (3285 ppm NO2-), Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Buffer, Precision Reference Standard, pH 10.000 ± 0.005 at 25°C, Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Total Suspended Solids (TSS) Standard, 100 ppm TSS (Gravimetric, Dried at 103-105°C), Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company EP Reference Solution Y2, Yellow Reference Solution, Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Lead Acetate TS, 9.5% (w/v), Ricca Chemical

Ricca Chemical Company Bromide Standard, 1000 ppm Br^-, Ricca Chemical

Ricca Chemical Company Conductivity Standard, 5000 μS/cm at 25°C (2620 ppm TDS as NaCl), Ricca Chemical

Ricca Chemical Company Hydrogen Peroxide, 3% (w/w), Stabilized Reagent Grade, Ricca Chemical

Ricca Chemical Company Cyanide Standard, 1000 ppm CN^-, Ricca Chemical

Ricca Chemical Company EP Reference Solution Y₆, Yellow Reference Solution, Ricca Chemical

Ricca Chemical Company Iodobromide TS, Ricca Chemical

Ricca Chemical Company Chloride Standard, 1000 ppm Cl^- (0.0282 N), Ricca Chemical

Ricca Chemical Company Potassium Hydroxide, 0.500 N (N/2) in Denatured Alcohol, Ricca Chemical

Conductivity Standard, 50 μS/cm at 25°C (23.6 ppm TDS as NaCl), Ricca Chemical

Ricca Chemical Company Nitrite Nitrogen Standard, 1000 ppm N (3285 ppm NO₂^-), Ricca Chemical

Buffer, Precision Reference Standard, pH 10.000 ± 0.005 at 25°C, Ricca Chemical

Ricca Chemical Company Total Suspended Solids (TSS) Standard, 100 ppm TSS (Gravimetric, Dried at 103-105°C), Ricca Chemical

Ricca Chemical Company EP Reference Solution Y₂, Yellow Reference Solution, Ricca Chemical