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Kjeldahl Buffers and Reagents

Buffers and reagents intended for use with the Kjeldahl method; the Kjeldahl method is an analytical chemistry procedure used for the quantitative determination of nitrogen contained in organic substances, ammonia and ammonium.
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1 – 15 of 35 results
1

FisherTab™ TT-35 Kjeldahl Tablets, Fisher Chemical

Composition per tablet: 3.5g K2SO4 + 0.1g CuSO4 + 0.1g TiO2

7

FisherTab™ TT-50 Kjeldahl Tablets, Fisher Chemical

Composition per tablet: 5g K2SO4 + 0.1g CuSO4 + 0.1g TiO2

8

FisherTab™ TT-43 Kjeldahl Tablets, Fisher Chemical

Composition per tablet: 4.18g K2SO4 + 0.0025g CuSO4 + 0.15g TiO2

9
Promotions Available

Kjel-Sorb™ Solution (Certified), Fisher Chemical™

CAS: 10043-35-3 Molecular Formula: BH3O3 Molecular Weight (g/mol): 61.83 MDL Number: MFCD00011337 InChI Key: KGBXLFKZBHKPEV-UHFFFAOYSA-N PubChem CID: 7628 ChEBI: CHEBI:33118 IUPAC Name: boric acid SMILES: OB(O)O

PubChem CID 7628
CAS 10043-35-3
Molecular Weight (g/mol) 61.83
ChEBI CHEBI:33118
MDL Number MFCD00011337
SMILES OB(O)O
IUPAC Name boric acid
InChI Key KGBXLFKZBHKPEV-UHFFFAOYSA-N
Molecular Formula BH3O3
10

Sodium Hydroxide, For Kjeldahl Nitrogen, Certified, 40.0% (w/w) ±0.4% (w/w), LabChem™

CAS: 1310-73-2 Molecular Formula: HNaO Molecular Weight (g/mol): 39.997 InChI Key: HEMHJVSKTPXQMS-UHFFFAOYSA-M Synonym: Caustic Soda PubChem CID: 14798 ChEBI: CHEBI:32145 IUPAC Name: sodium;hydroxide SMILES: [OH-].[Na+]

PubChem CID 14798
CAS 1310-73-2
Molecular Weight (g/mol) 39.997
ChEBI CHEBI:32145
SMILES [OH-].[Na+]
Synonym Caustic Soda
IUPAC Name sodium;hydroxide
InChI Key HEMHJVSKTPXQMS-UHFFFAOYSA-M
Molecular Formula HNaO
11

BUCHI Boric Acid with Sher Indicator, pH 4.65

Boric Acid with Sher Indicator, pH adjusted to 4.65 ± 0.15 for pH or colorimetric titration.

CAS 76-60-8
Molecular Weight (g/mol) 61.83
Packaging Plastic Bottle
Chemical Name or Material Boric Acid with Sher Indicator
Quantity 5 L
Synonym Orthoboric Acid
Molecular Formula BH3O3
12

BUCHI Kjeldahl Tablets

Digestion aids for nitrogen determination.

Percent Purity Mixture
Packaging Plastic Container
Quantity 1000 Pk.
13

BUCHI Activated Charcoal, 150 g

For the adsorption stage of the scrubber, holds back particles and enables the aerosols to recondensate.

14
Promotions Available

Boric Acid, 2% (w/v) with Mixed Indicator, Ricca Chemical

CAS: 7732-18-5 Molecular Formula: BH3O3 Molecular Weight (g/mol): Mixture MDL Number: MFCD00011337 InChI Key: KGBXLFKZBHKPEV-UHFFFAOYSA-N Synonym: orthoboric acid,boracic acid,borofax,boron hydroxide,boron trihydroxide,three elephant,basilit b,Tris-borate-EDTA,h3bo3,flea prufe PubChem CID: 7628 ChEBI: CHEBI:33118 IUPAC Name: boric acid SMILES: OB(O)O

PubChem CID 7628
CAS 7732-18-5
Molecular Weight (g/mol) Mixture
ChEBI CHEBI:33118
MDL Number MFCD00011337
SMILES OB(O)O
Synonym orthoboric acid,boracic acid,borofax,boron hydroxide,boron trihydroxide,three elephant,basilit b,Tris-borate-EDTA,h3bo3,flea prufe
IUPAC Name boric acid
InChI Key KGBXLFKZBHKPEV-UHFFFAOYSA-N
Molecular Formula BH3O3
15

Digestion Reagent, with Copper Catalyst, Ricca Chemical

For Analysis of Nitrogen (Kjeldahl)

Name Note With Copper Catalyst
CAS 7758-99-8
Color Blue
Physical Form Liquid
Packaging Natural Poly Bottle
CAS Min % 0.51
Chemical Name or Material Digestion Reagent
Grade Laboratory
CAS Max % 0.53
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