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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 69 results
1

FisherTab™ CT-37 Kjeldahl Tablets, Fisher Chemical
GSA_VA

Composition per tablet: 3.5g K2SO4 + 0.4g CuSO4

EDGE
2

FisherTab™ TT-35 Kjeldahl Tablets, Fisher Chemical

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

EDGE
3

FisherTab™ ST-AUTO Kjeldahl Tablets, Fisher Chemical

Composition per tablet: 1.5g K2SO4 + 0.015g Se

EDGE
4

FisherTab™ MT-37 Kjeldahl Tablets, Fisher Chemical

Composition per tablet: 3.5g K2SO4 + 0.175g HgO

EDGE
5

FisherTab™ TT-43 Kjeldahl Tablets, Fisher Chemical

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

EDGE
8

FisherTab CT-AUTO Kjeldahl Tablets, Fisher Chemical

Composition per tablet: 1.5g K2SO4 + 0.15g CuSO4

9
Promotions Available

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

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
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

Digestion Reagent, with Copper Catalyst, Ricca Chemical
SDP

For Analysis of Nitrogen (Kjeldahl)

Name Note With Copper Catalyst
CAS 7758-99-8
Color Blue
Packaging Natural Poly Bottle
CAS Min % 23.95
Physical Form Liquid
Chemical Name or Material Digestion Reagent
Grade Laboratory
CAS Max % 0.53
11

BUCHI Boric Acid with Sher Indicator, pH 4.65
SDP

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
Quantity 5 L
Chemical Name or Material Boric Acid with Sher Indicator
Synonym Orthoboric Acid
Molecular Formula BH3O3
12

BUCHI Kjeldahl Tablets
SDP

Digestion aids for nitrogen determination.

Percent Purity Mixture
Packaging Plastic Container
Quantity 1000 Pk.
13

Sodium Hydroxide-Thiosulfate, 50%-2.5% (w/v), Ricca Chemical
SDP

Molecular Formula: HNaO Molecular Weight (g/mol): Mixture InChI Key: HEMHJVSKTPXQMS-UHFFFAOYSA-M PubChem CID: 14798 ChEBI: CHEBI:32145 IUPAC Name: sodium;hydroxide SMILES: [OH-].[Na+]

PubChem CID 14798
Molecular Weight (g/mol) Mixture
ChEBI CHEBI:32145
SMILES [OH-].[Na+]
IUPAC Name sodium;hydroxide
InChI Key HEMHJVSKTPXQMS-UHFFFAOYSA-M
Molecular Formula HNaO
14

FisherTab™ TT-50 Kjeldahl Tablets, Fisher Chemical

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

15

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

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
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