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 (24,310)

Spectroscopy Standards (5,752)

General Chemistry Solutions (5,095)

Matrix Blanks and Standardization Solutions (4,314)

Life Science Buffers (4,213)

Electrochemistry Buffers (2,364)

Environmental Testing Standards (1,894)

Electrochemistry Standards (1,249)

Karl Fischer Buffers and Reagents (467)

Isotope Standards (380)

Viscosity Standards (258)

Quality Control and Proficiency Samples (184)

Kjeldahl Buffers and Reagents (90)

Gel Filtration Standards (59)

Matrix Modifiers (29)

Osmolality Standards (12)

Smoke Point Reference (10)

Polarimetric Standards (6)

Narrow Results

special offers

Clearance (3)
New Lab Start-Up (117)
Offers (111)

special interests

Available on GSA/VA Contract (381)
SureTRACE (78)
Fast Shipping (710)
Greener Choice (90)
Production Products (187)
Science Education (215)
Small and Specialty Supplier (18,625)

Grade

AAS (55)
AAS Standard (11)
ACS (55)
ACS Reagent (24)
ACS/ASTM E 200/AOAC/EPA (7)
ACS/ASTM E 200/AOAC/USP Volumetric (5)
APHA/EPA (5)

Show all

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)

Show all

Quantity

0.1 mL (1)
0.1 mol (1)
0.5 L (1)
0.5 mL (15)
0.5 mol (1)
1 Bottle (5)
1 Box (1)

Show all

Percent Purity

≥ 4400 Units/mg (Nystatin) ≥ 5000 Units/mg (Nystatin) (1) (8)
≥ 85.0 % (1)
≥14% (BF3) (1)
≥30% (RT) (1)
≥30% (titration) (1)
≥35% (RT) (1)
≥40% (3)

Show all

pH

≥12 to ≤14 (6)
>11.5 (1)
>12 (44)
>13 (100)
>8 (1)
<0.5 (3)
<1 (99)

Show all

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)

Show all

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)

Show all

Physical Form

Aqueous Solution (30)
Capsule (11)
Chemvelope (1)
Clear Liquid (1)
Clear Liquid at 20°C (2)
Colorless Liquid (1)
Crystalline (17)

Show all

Technique

AA (469)
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)

Show all

Solution Type

Antigen Retrieval Reagent (1)
Aqueous (2)
Buffer (373)
Buffer, Storage (2)
Calibration (8)
Cleaning (1)
Colored pH Buffer (35)

Show all

Search Within Results

346 – 360 of 45,039 results

346

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

347

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

348

Hexavalent Chromium Standard, 100 ppm Cr⁶⁺, Ricca Chemical

CAS: 7732-18-5

Pricing & Availability
Specifications

CAS	7732-18-5

349

Nitrite Standard, 1000 ppm NO₂^- (304.5 ppm N), Ricca Chemical

CAS: 7732-18-5

Pricing & Availability
Specifications

CAS	7732-18-5

350

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

351

Phosphate Phosphorus Standard, 100 ppm P (306.6 ppm PO₄³^-), Ricca Chemical

CAS: 7778-77-0 Molecular Formula: H2KO4P Molecular Weight (g/mol): 136.08 MDL Number: MFCD00011401 MFCD00147253 InChI Key: GNSKLFRGEWLPPA-UHFFFAOYSA-M PubChem CID: 516951 ChEBI: CHEBI:63036 IUPAC Name: potassium dihydrogen phosphate SMILES: [K+].OP(O)([O-])=O

Pricing & Availability
Specifications

PubChem CID	516951
CAS	7778-77-0
Molecular Weight (g/mol)	136.08
ChEBI	CHEBI:63036
MDL Number	MFCD00011401 MFCD00147253
SMILES	[K+].OP(O)([O-])=O
IUPAC Name	potassium dihydrogen phosphate
InChI Key	GNSKLFRGEWLPPA-UHFFFAOYSA-M
Molecular Formula	H2KO4P

352

Sulfate Standard, 1000 ppm SO₄²^-, Ricca Chemical

CAS: 7757-82-6 Molecular Formula: Na2O4S Molecular Weight (g/mol): 142.04 MDL Number: MFCD00003504 InChI Key: PMZURENOXWZQFD-UHFFFAOYSA-L PubChem CID: 24436 ChEBI: CHEBI:32149 IUPAC Name: disodium sulfate SMILES: [Na+].[Na+].[O-]S([O-])(=O)=O

Pricing & Availability
Specifications

PubChem CID	24436
CAS	7757-82-6
Molecular Weight (g/mol)	142.04
ChEBI	CHEBI:32149
MDL Number	MFCD00003504
SMILES	[Na+].[Na+].[O-]S([O-])(=O)=O
IUPAC Name	disodium sulfate
InChI Key	PMZURENOXWZQFD-UHFFFAOYSA-L
Molecular Formula	Na2O4S

353

Nitrate Nitrogen Standard, 1000 ppm N (4427 ppm NO₃^-), Ricca Chemical

CAS: 7757-79-1 Molecular Formula: KNO3 Molecular Weight (g/mol): 101.10 MDL Number: MFCD00011409 InChI Key: FGIUAXJPYTZDNR-UHFFFAOYSA-N PubChem CID: 24434 ChEBI: CHEBI:63043 IUPAC Name: potassium nitrate SMILES: [K+].[O-][N+]([O-])=O

Pricing & Availability
Specifications

PubChem CID	24434
CAS	7757-79-1
Molecular Weight (g/mol)	101.10
ChEBI	CHEBI:63043
MDL Number	MFCD00011409
SMILES	[K+].[O-][N+]([O-])=O
IUPAC Name	potassium nitrate
InChI Key	FGIUAXJPYTZDNR-UHFFFAOYSA-N
Molecular Formula	KNO3

354

Fluoride Standard, 1000 ppm F^-, Ricca Chemical

CAS: 7681-49-4 Molecular Formula: FNa Molecular Weight (g/mol): 41.99 MDL Number: MFCD00003524 InChI Key: PUZPDOWCWNUUKD-UHFFFAOYSA-M PubChem CID: 5235 ChEBI: CHEBI:28741 IUPAC Name: sodium fluoride SMILES: [F-].[Na+]

Pricing & Availability
Specifications

PubChem CID	5235
CAS	7681-49-4
Molecular Weight (g/mol)	41.99
ChEBI	CHEBI:28741
MDL Number	MFCD00003524
SMILES	[F-].[Na+]
IUPAC Name	sodium fluoride
InChI Key	PUZPDOWCWNUUKD-UHFFFAOYSA-M
Molecular Formula	FNa

355

Ammonia R (175 g/L NH₃), Ricca Chemical

CAS: 1336-21-6 Molecular Formula: H5NO Molecular Weight (g/mol): 35.05 MDL Number: MFCD00066650 InChI Key: VHUUQVKOLVNVRT-UHFFFAOYSA-N Synonym: ammonium hydroxide,ammonia water,ammonia aqueous,aquammonia,aqua ammonia,ammonia, aqua,household ammonia,ammonium hydroxide solution,ammonia, monohydrate,ammonium hydroxide nh4 oh PubChem CID: 14923 ChEBI: CHEBI:18219 IUPAC Name: amine hydrate SMILES: N.O

Pricing & Availability
Specifications

PubChem CID	14923
CAS	1336-21-6
Molecular Weight (g/mol)	35.05
ChEBI	CHEBI:18219
MDL Number	MFCD00066650
SMILES	N.O
Synonym	ammonium hydroxide,ammonia water,ammonia aqueous,aquammonia,aqua ammonia,ammonia, aqua,household ammonia,ammonium hydroxide solution,ammonia, monohydrate,ammonium hydroxide nh4 oh
IUPAC Name	amine hydrate
InChI Key	VHUUQVKOLVNVRT-UHFFFAOYSA-N
Molecular Formula	H5NO

356

Sodium Thiosulfate, 0.100 N (N/10), Ricca Chemical

CAS: 10102-17-7 Molecular Formula: H10Na2O8S2 InChI Key: PODWXQQNRWNDGD-UHFFFAOYSA-L Synonym: sodium thiosulfate pentahydrate,ametox,sodium thiosulfate, pentahydrate,antichlor,tinver,disodium thiosulfate pentahydrate,unii-hx1032v43m,ccris 3952,thiosulfuric acid, disodium salt, pentahydrate,sodium hyposulfite pentahydrate PubChem CID: 61475 ChEBI: CHEBI:32150

Pricing & Availability
Specifications

PubChem CID	61475
CAS	10102-17-7
ChEBI	CHEBI:32150
Synonym	sodium thiosulfate pentahydrate,ametox,sodium thiosulfate, pentahydrate,antichlor,tinver,disodium thiosulfate pentahydrate,unii-hx1032v43m,ccris 3952,thiosulfuric acid, disodium salt, pentahydrate,sodium hyposulfite pentahydrate
InChI Key	PODWXQQNRWNDGD-UHFFFAOYSA-L
Molecular Formula	H10Na2O8S2

357

Potassium Iodide, 10% (w/v), Stabilized, Ricca Chemical

CAS: 7681-11-0 Molecular Formula: IK Molecular Weight (g/mol): 166.003 InChI Key: NLKNQRATVPKPDG-UHFFFAOYSA-M Synonym: potassium iodide,potassium iodide ki,pima,kali iodide,thyro-block,knollide,kisol,asmofug e,potassium diiodide,potassium monoiodide PubChem CID: 4875 ChEBI: CHEBI:8346 IUPAC Name: potassium;iodide SMILES: [K+].[I-]

Pricing & Availability
Specifications

PubChem CID	4875
CAS	7681-11-0
Molecular Weight (g/mol)	166.003
ChEBI	CHEBI:8346
SMILES	[K+].[I-]
Synonym	potassium iodide,potassium iodide ki,pima,kali iodide,thyro-block,knollide,kisol,asmofug e,potassium diiodide,potassium monoiodide
IUPAC Name	potassium;iodide
InChI Key	NLKNQRATVPKPDG-UHFFFAOYSA-M
Molecular Formula	IK

358

Thioacetamide TS, 4% (w/v), Ricca Chemical

CAS: 62-55-5 Molecular Formula: C2H5NS Molecular Weight (g/mol): 75.13 MDL Number: MFCD00008070 InChI Key: YUKQRDCYNOVPGJ-UHFFFAOYSA-N Synonym: thioacetamide,acetothioamide,thiacetamide,acetamide, thio,thioacetimidic acid,acetimidic acid, thio,usaf cb-21,usaf ek-1719,rcra waste number u218,acetic acid, thiono-, amide PubChem CID: 2723949 ChEBI: CHEBI:32497 IUPAC Name: ethanethioamide SMILES: CC(N)=S

Pricing & Availability
Specifications

PubChem CID	2723949
CAS	62-55-5
Molecular Weight (g/mol)	75.13
ChEBI	CHEBI:32497
MDL Number	MFCD00008070
SMILES	CC(N)=S
Synonym	thioacetamide,acetothioamide,thiacetamide,acetamide, thio,thioacetimidic acid,acetimidic acid, thio,usaf cb-21,usaf ek-1719,rcra waste number u218,acetic acid, thiono-, amide
IUPAC Name	ethanethioamide
InChI Key	YUKQRDCYNOVPGJ-UHFFFAOYSA-N
Molecular Formula	C2H5NS

359

Calcium Hydroxide TS (Saturated Aqueous Solution), Ricca Chemical

CAS: 1305-62-0 Molecular Formula: CaH2O2 Molecular Weight (g/mol): 74.09 MDL Number: MFCD00010901 InChI Key: AXCZMVOFGPJBDE-UHFFFAOYSA-L Synonym: calcium hydroxide,slaked lime,hydrated lime,calcium dihydroxide,calcium ii hydroxide,calcium oxide, hydrated,kalziumhydroxid,loeschkalk,pickling lime,calciumdihydroxid PubChem CID: 6093208 ChEBI: CHEBI:31341 IUPAC Name: calcium dihydroxide SMILES: [OH-].[OH-].[Ca++]

Pricing & Availability
Specifications

PubChem CID	6093208
CAS	1305-62-0
Molecular Weight (g/mol)	74.09
ChEBI	CHEBI:31341
MDL Number	MFCD00010901
SMILES	[OH-].[OH-].[Ca++]
Synonym	calcium hydroxide,slaked lime,hydrated lime,calcium dihydroxide,calcium ii hydroxide,calcium oxide, hydrated,kalziumhydroxid,loeschkalk,pickling lime,calciumdihydroxid
IUPAC Name	calcium dihydroxide
InChI Key	AXCZMVOFGPJBDE-UHFFFAOYSA-L
Molecular Formula	CaH2O2

360

Sodium Hydroxide, 30% (w/v), Ricca Chemical

CAS: 1310-73-2 Molecular Formula: HNaO Molecular Weight (g/mol): 39.997 InChI Key: HEMHJVSKTPXQMS-UHFFFAOYSA-M Synonym: sodium hydroxide,caustic soda,sodium hydrate,white caustic,soda lye,aetznatron,ascarite,sodium hydroxide na oh,sodium hydroxide solution,soda, caustic PubChem CID: 14798 ChEBI: CHEBI:32145 IUPAC Name: sodium;hydroxide SMILES: [OH-].[Na+]

Pricing & Availability
Specifications

PubChem CID	14798
CAS	1310-73-2
Molecular Weight (g/mol)	39.997
ChEBI	CHEBI:32145
SMILES	[OH-].[Na+]
Synonym	sodium hydroxide,caustic soda,sodium hydrate,white caustic,soda lye,aetznatron,ascarite,sodium hydroxide na oh,sodium hydroxide solution,soda, caustic
IUPAC Name	sodium;hydroxide
InChI Key	HEMHJVSKTPXQMS-UHFFFAOYSA-M
Molecular Formula	HNaO

Prev
1
...
22
23
24
25
...
3,003
Next

Buffers and Standards

Filtered Search Results

Narrow Results