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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

 

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Kjeldahl Buffers and Reagents (1)

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1 – 15 of 1,688 results
1

Hydrogen Sulfide Water, Solution, Spectrum™ Chemical
SDP

CAS 7732-18-5
Packaging Amber Glass Bottle
Grade Chemical Solution
3

Bromine Water, Saturated Solution, Spectrum™ Chemical
SDP

CAS 7726-95-6
4

Chlorine Water, Saturated Solution, Approx. 0.4% Chlorine, U.S.P. Chlorine Test Solution, Spectrum™ Chemical
SDP

CAS: 7732-18-5,7782-50-5 Molecular Formula: Cl2 Molecular Weight (g/mol): 70.90 InChI Key: KZBUYRJDOAKODT-UHFFFAOYSA-N IUPAC Name: dichlorine SMILES: ClCl

CAS 7732-18-5,7782-50-5
Molecular Weight (g/mol) 70.90
SMILES ClCl
IUPAC Name dichlorine
InChI Key KZBUYRJDOAKODT-UHFFFAOYSA-N
Molecular Formula Cl2
5

Chlorine Water, Saturated Solution, Approx. 0.4% Chlorine, U.S.P. Chlorine Test Solution, Spectrum™ Chemical
SDP

CAS: 7782-50-5,7732-18-5 Molecular Formula: Cl2 Molecular Weight (g/mol): 70.90 InChI Key: KZBUYRJDOAKODT-UHFFFAOYSA-N IUPAC Name: dichlorine SMILES: ClCl

CAS 7782-50-5,7732-18-5
Molecular Weight (g/mol) 70.90
SMILES ClCl
IUPAC Name dichlorine
InChI Key KZBUYRJDOAKODT-UHFFFAOYSA-N
Molecular Formula Cl2
6

Isopropyl Alcohol Solution, ACS Reagent, 70% Isopropyl Alcohol in Water, Honeywell Burdick & Jackson

CAS: 67-63-0 Molecular Formula: C3H8O Molecular Weight (g/mol): 60.096 InChI Key: KFZMGEQAYNKOFK-UHFFFAOYSA-N Synonym: isopropanol,2-propanol,isopropyl alcohol,2-hydroxypropane,alkolave,avantine,hartosol,dimethylcarbinol,sec-propyl alcohol,petrohol PubChem CID: 3776 ChEBI: CHEBI:17824 IUPAC Name: propan-2-ol SMILES: CC(C)O

EDGE
PubChem CID 3776
CAS 67-63-0
Molecular Weight (g/mol) 60.096
ChEBI CHEBI:17824
SMILES CC(C)O
Synonym isopropanol,2-propanol,isopropyl alcohol,2-hydroxypropane,alkolave,avantine,hartosol,dimethylcarbinol,sec-propyl alcohol,petrohol
IUPAC Name propan-2-ol
InChI Key KFZMGEQAYNKOFK-UHFFFAOYSA-N
Molecular Formula C3H8O
7

Tetramethylammonium Hydroxide, 10% Solution in Water, (U.S.P. Test Solution), Spectrum™ Chemical
SDP

CAS: 75-59-2 Molecular Formula: C4H13NO Molecular Weight (g/mol): 91.15 InChI Key: WGTYBPLFGIVFAS-UHFFFAOYSA-M IUPAC Name: tetramethylazanium hydroxide SMILES: [OH-].C[N+](C)(C)C

CAS 75-59-2
Molecular Weight (g/mol) 91.15
SMILES [OH-].C[N+](C)(C)C
IUPAC Name tetramethylazanium hydroxide
InChI Key WGTYBPLFGIVFAS-UHFFFAOYSA-M
Molecular Formula C4H13NO
8

Thermo Scientific Chemicals DL-1,4-Dithiothreitol, For Biochemistry, 1M solution in water

Color Colorless
Physical Form Liquid
Chemical Name or Material DL-1, 4-Dithiothreitol
Grade Biochemical
Merck Index 15, 3419
Concentration 0.90 to 1.10M
Density 1.0400g/mL
Name Note 1M Solution in water, For molecular biology
CAS 7732-18-5
Health Hazard 3 GHS P Statement:
IF ON SKIN: Wash with plenty of soap and water.
Wear protective gloves/protective clothing/eye protection/face protection.
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

WARNING: The information provided on this web site was developed in compliance with European Union (EU) regulations and is correct to the best of our knowledge, information and belief at the date of its publication. The information given is designed only as a guide for safe handling and use. It is not to be considered as either a warranty or quality specification.
Health Hazard 2 GHS H Statement:
Causes serious eye irritation.
Causes skin irritation.
Packaging Glass bottle
Health Hazard 1 GHS Signal Word: Warning
Formula Weight 154.24
Specific Gravity 1.04
9

Benzyltrimethylammonium chloride, 50 wt.% solution in water, Thermo Scientific Chemicals

CAS: 56-93-9 Molecular Formula: C10H16ClN Molecular Weight (g/mol): 185.70 MDL Number: MFCD00011782 InChI Key: KXHPPCXNWTUNSB-UHFFFAOYSA-M Synonym: benzyltrimethylammonium chloride,tmbac,benzyl trimethylammonium chloride,benzyltrimethyl ammonium chloride,benzyl trimethyl ammonium chloride,benzenemethanaminium, n,n,n-trimethyl-, chloride,benzyltrimethylazanium chloride,unii-vnk45y7ba1,ammonium, benzyltrimethyl-, chloride,trimethylbenzylammonium chloride PubChem CID: 5963 IUPAC Name: benzyl(trimethyl)azanium;chloride SMILES: [Cl-].C[N+](C)(C)CC1=CC=CC=C1

PubChem CID 5963
CAS 56-93-9
Molecular Weight (g/mol) 185.70
MDL Number MFCD00011782
SMILES [Cl-].C[N+](C)(C)CC1=CC=CC=C1
Synonym benzyltrimethylammonium chloride,tmbac,benzyl trimethylammonium chloride,benzyltrimethyl ammonium chloride,benzyl trimethyl ammonium chloride,benzenemethanaminium, n,n,n-trimethyl-, chloride,benzyltrimethylazanium chloride,unii-vnk45y7ba1,ammonium, benzyltrimethyl-, chloride,trimethylbenzylammonium chloride
IUPAC Name benzyl(trimethyl)azanium;chloride
InChI Key KXHPPCXNWTUNSB-UHFFFAOYSA-M
Molecular Formula C10H16ClN
10

Hexafluorophosphoric acid, 60 wt.% solution in water, Thermo Scientific Chemicals

CAS: 7664-39-3 Molecular Formula: HF6P MDL Number: MFCD00011350 Synonym: Hydrogen hexafluorophosphate

CAS 7664-39-3
MDL Number MFCD00011350
Synonym Hydrogen hexafluorophosphate
Molecular Formula HF6P
11

Ammonium thioglycolate, 70 wt.% solution in water, Thermo Scientific Chemicals

Ammonium thioglycolate, 68.0 to 72.0%, C2H7NO2S, CAS Number-5421-46-5, 7732-18-5

Molecular Weight (g/mol) 109.143
Identification ammonium: positive, mercaptane: positive
InChI Key ZZTCCAPMZLDHFM-UHFFFAOYSA-N
Density 1.2200g/mL
PubChem CID 21534
Name Note 70 wt.% solution in water
Percent Purity 68.0 to 72.0%
pH 5.8 to 6.4
Formula Weight 109.15
Melting Point -20.0°C
Boiling Point 115.0°C
Color Colorless
Physical Form Solution
Chemical Name or Material Ammonium thioglycolate
SMILES C(C(=O)[O-])S.[NH4+]
CAS 7732-18-5
Health Hazard 3 GHS P Statement:
Wear protective gloves/protective clothing/eye protection/face protection.
IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.

WARNING: The information provided on this web site was developed in compliance with European Union (EU) regulations and is correct to the best of our knowledge, information and belief at the date of its publication. The information given is designed only as a guide for safe handling and use. It is not to be considered as either a warranty or quality specification.
MDL Number MFCD00137451
Health Hazard 2 GHS H Statement:
May cause an allergic skin reaction.
Toxic if swallowed.
May be corrosive to metals.
Packaging Glass bottle
Solubility Information Solubility in water: completely soluble.
Health Hazard 1 GHS Signal Word: Danger
Synonym ammonium thioglycolate,ammonium mercaptoacetate,acetic acid, mercapto-, monoammonium salt,thiofaco a-50,ammonium thioglycollate,thioglycolic acid ammonium salt,usaf mo-2,unii-6p9e788vzz,thioglycollic acid, ammonium salt,ammonium 2-mercaptoacetate
IUPAC Name azanium;2-sulfanylacetate
Molecular Formula C2H7NO2S
Specific Gravity 1.22
12

Lithium azide, pure, 20% solution in water, Thermo Scientific Chemicals

CAS: 19597-69-4 Molecular Formula: LiN3 MDL Number: MFCD00041956

CAS 19597-69-4
MDL Number MFCD00041956
Molecular Formula LiN3
13

Sodium metatungstate, 2.82 density solution in water, stabilized, Thermo Scientific Chemicals

CAS: 12141-67-2 Molecular Formula: H2Na6O40W12 MDL Number: MFCD00150663 Synonym: Sodium polytungstate

CAS 12141-67-2
MDL Number MFCD00150663
Synonym Sodium polytungstate
Molecular Formula H2Na6O40W12
14

hydrogen peroxide, 3 wt.% solution in water, stabilized, Thermo Scientific Chemicals

CAS: 7722-84-1 Molecular Formula: H2O2 Molecular Weight (g/mol): 34.014 MDL Number: MFCD00011333 InChI Key: MHAJPDPJQMAIIY-UHFFFAOYSA-N Synonym: oxydol,perhydrol,superoxol,interox,hydrogen dioxide,inhibine,peroxaan,albone,hioxyl,kastone PubChem CID: 784 ChEBI: CHEBI:16240 IUPAC Name: hydrogen peroxide SMILES: OO

PubChem CID 784
CAS 7722-84-1
Molecular Weight (g/mol) 34.014
ChEBI CHEBI:16240
MDL Number MFCD00011333
SMILES OO
Synonym oxydol,perhydrol,superoxol,interox,hydrogen dioxide,inhibine,peroxaan,albone,hioxyl,kastone
IUPAC Name hydrogen peroxide
InChI Key MHAJPDPJQMAIIY-UHFFFAOYSA-N
Molecular Formula H2O2
15

Spiking Solution for Water and Soil - CLP, Ricca Chemical
SDP

For Water and Soil

CAS 7440-28-0
Physical Form Liquid
CAS Min % 0.01
Chemical Name or Material Spiking Solution
CAS Max % 0.01