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Buffers and Standards

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

 

Spectroscopy Standards (72)
General Chemistry Solutions (44)
Matrix Blanks and Standardization Solutions (26)
Environmental Testing Standards (15)
Chromatography Standards (7)
Quality Control and Proficiency Samples (5)
Kjeldahl Buffers and Reagents (5)
Life Science Buffers (1)
Electrochemistry Buffers (1)

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1 – 15 of 127 results
1

Digestion Reagent, with Mercury Catalyst, Ricca Chemical
SDP

For Analysis of Nitrogen (Kjeldahl)

Name Note With Mercury Catalyst
CAS 21908-53-2
Color Colorless
Physical Form Liquid
Packaging Natural Poly Bottle
CAS Min % 0.13
Chemical Name or Material Digestion Reagent
CAS Max % 0.14
2

Potassium Bromide Solution, For Mercury, LabChem™

CAS: 7758-02-3 Molecular Formula: BrK Molecular Weight (g/mol): 119.00 MDL Number: MFCD00011358 InChI Key: IOLCXVTUBQKXJR-UHFFFAOYSA-M Synonym: potassium bromide,bromide salt of potassium,kalii bromidum,bromure de potassium,caswell no. 684,tripotassium tribromide,potassium bromide k3br3,unii-osd78555zm,ccris 6095 PubChem CID: 253877 ChEBI: CHEBI:32030 IUPAC Name: potassium bromide SMILES: [K+].[Br-]

PubChem CID 253877
CAS 7758-02-3
Molecular Weight (g/mol) 119.00
ChEBI CHEBI:32030
MDL Number MFCD00011358
SMILES [K+].[Br-]
Synonym potassium bromide,bromide salt of potassium,kalii bromidum,bromure de potassium,caswell no. 684,tripotassium tribromide,potassium bromide k3br3,unii-osd78555zm,ccris 6095
IUPAC Name potassium bromide
InChI Key IOLCXVTUBQKXJR-UHFFFAOYSA-M
Molecular Formula BrK
3

Acid Digestion Reagent (with Mercury), For Organic Nitrogen, LabChem™

Linear Formula HgSO4
Color Colorless
Physical Form Liquid
UN Number UN2796
Chemical Name or Material Acid Digestion Reagent (with Mercury)
Identification Passes Test
Density >1.2g/mL
Name Note For Organic Nitrogen
CAS 7783-35-9
Health Hazard 3 GHS P Statement
Do not breathe mist.
Wear eye protection, face protection, protective clothing, protective gloves.
Wash exposed skin thoroughly after handling.
Avoid release to the environment.
If swallowed: Rinse mouth.
Do not induce vomiting.
Immediately call a poison center/doctor.
If on skin (or hair): Remove/Take off immediately all contaminated clothing.
Rinse skin with water/shower.
Immediately call a poison center/doctor.
Wash contaminated clothing before reuse.
If inhaled: Remove person to fresh air and keep comfortable for breathing.
Immediately call a poison center/doctor.
If in eyes: Rinse cautiously with water for several minutes.
Remove contact lenses, if present and easy to do.
Continue rinsing.
Immediately call a poison center/doctor.
Store locked up.
Dispose of contents/container to comply with local, state and federal regulations.
Decomposition Information Sulfur compounds; Mercury; Thermal decomposition generates: Corrosive vapors
Health Hazard 2 GHS H Statement
Causes severe skin burns and eye damage.
May cause damage to organs (nervous system, kidneys, liver) through prolonged or repeated exposure.
Toxic to aquatic life with long lasting effects.
Packaging Poly Bottle
Solubility Information Soluble in water
Health Hazard 1 Danger
Recommended Storage Room Temperature
Formula Weight 296.65
Specific Gravity 1.2g/mL
CAS Max % 0.2
4

Mercury on Filter Paper, MilliporeSigma™ Supelco™

This proficiency testing sample is produced in accordance with ISO/IEC 17043:2010. All information regarding the use of this material can be found in the reporting packet supplied for each sample.

5

Mercury Standard, 20 ppm Hg, Ricca Chemical
SDP

CAS: 7439-97-6 Molecular Formula: Hg Molecular Weight (g/mol): 200.59 MDL Number: MFCD00011035 InChI Key: QSHDDOUJBYECFT-UHFFFAOYSA-N PubChem CID: 23931 ChEBI: CHEBI:16170 IUPAC Name: mercury SMILES: [Hg]

PubChem CID 23931
CAS 7439-97-6
Molecular Weight (g/mol) 200.59
ChEBI CHEBI:16170
MDL Number MFCD00011035
SMILES [Hg]
IUPAC Name mercury
InChI Key QSHDDOUJBYECFT-UHFFFAOYSA-N
Molecular Formula Hg
6

Hydroxylamine Hydrochloride, For Mercury, Certified, 50% (w/v), LabChem™

CAS: 5470-11-1 Molecular Formula: ClH4NO Molecular Weight (g/mol): 69.49 MDL Number: MFCD00051089 InChI Key: WTDHULULXKLSOZ-UHFFFAOYSA-N Synonym: hydroxylamine hydrochloride,hydroxylamine hcl,hydroxylammonium chloride,oxammonium hydrochloride,hydroxylamine, hydrochloride,hydroxyamine hydrochloride,hydroxylamine chloride 1:1,hydroxylamine, hydrochloride 1:1,hydroxyamine hcl,oxammonium hci PubChem CID: 443297 ChEBI: CHEBI:5807 IUPAC Name: hydroxylamine hydrochloride SMILES: Cl.NO

PubChem CID 443297
CAS 5470-11-1
Molecular Weight (g/mol) 69.49
ChEBI CHEBI:5807
MDL Number MFCD00051089
SMILES Cl.NO
Synonym hydroxylamine hydrochloride,hydroxylamine hcl,hydroxylammonium chloride,oxammonium hydrochloride,hydroxylamine, hydrochloride,hydroxyamine hydrochloride,hydroxylamine chloride 1:1,hydroxylamine, hydrochloride 1:1,hydroxyamine hcl,oxammonium hci
IUPAC Name hydroxylamine hydrochloride
InChI Key WTDHULULXKLSOZ-UHFFFAOYSA-N
Molecular Formula ClH4NO
7

Mercury (Low Level) - WP, MilliporeSigma™ Supelco™

This proficiency testing sample is produced in accordance with ISO/IEC 17043:2010. All information regarding the use of this material can be found in the reporting packet supplied for each sample.

9

Mercury Organometallic Standards, SPEX CertiPrep™
SDP

ISO/IEC Guide 34 Certified, NIST-Traceable Certified Reference Material

PubChem CID 23931
CAS 64742-65-0,8002-05-9,7439-97-6
Molecular Weight (g/mol) 200.59
ChEBI CHEBI:16170
MDL Number MFCD00011035
SMILES [Hg]
IUPAC Name mercury
InChI Key QSHDDOUJBYECFT-UHFFFAOYSA-N
Molecular Formula Hg
10

Potassium Persulfate, For Mercury, Metals, Certified, 4.5% to 5.0% (w/v), LabChem™

CAS: 7727-21-1 Molecular Formula: K2O8S2 Molecular Weight (g/mol): 270.309 InChI Key: USHAGKDGDHPEEY-UHFFFAOYSA-L Synonym: potassium persulfate,anthion,potassium peroxydisulfate,potassium peroxodisulfate,dipotassium peroxydisulfate,potassium peroxydisulphate,dipotassium persulfate,caswell no. 700,dipotassium peroxodisulphate,unii-6b86k0mczc PubChem CID: 24412 IUPAC Name: dipotassium;sulfonatooxy sulfate SMILES: [O-]S(=O)(=O)OOS(=O)(=O)[O-].[K+].[K+]

PubChem CID 24412
CAS 7727-21-1
Molecular Weight (g/mol) 270.309
SMILES [O-]S(=O)(=O)OOS(=O)(=O)[O-].[K+].[K+]
Synonym potassium persulfate,anthion,potassium peroxydisulfate,potassium peroxodisulfate,dipotassium peroxydisulfate,potassium peroxydisulphate,dipotassium persulfate,caswell no. 700,dipotassium peroxodisulphate,unii-6b86k0mczc
IUPAC Name dipotassium;sulfonatooxy sulfate
InChI Key USHAGKDGDHPEEY-UHFFFAOYSA-L
Molecular Formula K2O8S2
11

Potassium Permanganate, 5% (w/v), Mercury Free, Ricca Chemical
SDP

CAS: 7722-64-7 Molecular Formula: KMnO4 Molecular Weight (g/mol): 158.032 InChI Key: VZJVWSHVAAUDKD-UHFFFAOYSA-N PubChem CID: 516875 IUPAC Name: potassium;permanganate SMILES: [O-][Mn](=O)(=O)=O.[K+]

PubChem CID 516875
CAS 7722-64-7
Molecular Weight (g/mol) 158.032
SMILES [O-][Mn](=O)(=O)=O.[K+]
IUPAC Name potassium;permanganate
InChI Key VZJVWSHVAAUDKD-UHFFFAOYSA-N
Molecular Formula KMnO4
12

Mercury Standard For ICP/MS, SPEX CertiPrep™
SDP

CAS: 7439-97-6 Molecular Formula: HNO3 Molecular Weight (g/mol): 63.01 MDL Number: MFCD00011349 InChI Key: GRYLNZFGIOXLOG-UHFFFAOYSA-N PubChem CID: 944 ChEBI: CHEBI:48107 IUPAC Name: nitric acid SMILES: O[N+]([O-])=O

PubChem CID 944
CAS 7439-97-6
Molecular Weight (g/mol) 63.01
ChEBI CHEBI:48107
MDL Number MFCD00011349
SMILES O[N+]([O-])=O
IUPAC Name nitric acid
InChI Key GRYLNZFGIOXLOG-UHFFFAOYSA-N
Molecular Formula HNO3
13

Mercury in Impinger Solution, Proficiency Testing Material, MilliporeSigma™ Supelco™

This proficiency testing sample is produced in accordance with ISO/IEC 17043:2010. All information regarding the use of this material can be found in the reporting packet supplied for each sample.

15

Potassium Permanganate, For Mercury, Metals, Certified, 5.0% (w/v) ±0.5%, LabChem™

CAS: 7722-64-7 Molecular Formula: KMnO4 Molecular Weight (g/mol): 158.032 InChI Key: VZJVWSHVAAUDKD-UHFFFAOYSA-N Synonym: potassium permanganate,chameleon mineral,condy's crystals,argucide,cairox,permanganate of potash,insta-perm,walko tablets,algae-k,solo san soo PubChem CID: 516875 IUPAC Name: potassium;permanganate SMILES: [O-][Mn](=O)(=O)=O.[K+]

PubChem CID 516875
CAS 7722-64-7
Molecular Weight (g/mol) 158.032
SMILES [O-][Mn](=O)(=O)=O.[K+]
Synonym potassium permanganate,chameleon mineral,condy's crystals,argucide,cairox,permanganate of potash,insta-perm,walko tablets,algae-k,solo san soo
IUPAC Name potassium;permanganate
InChI Key VZJVWSHVAAUDKD-UHFFFAOYSA-N
Molecular Formula KMnO4