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NITROGEN, TOTAL HIGH RANGE
Nitrogen, Total HR
SPECIFICATIONS
Range 10 to 150 mg/L N
Resolution 1 mg/L
Accuracy ±3 mg/L or ±4 % of reading @ 25 °C, whichever is greater
Light Source Tungsten lamp with narrow band interference filter @ 420 nm
Method Chromotropic acid method. A persulfate digestion converts all forms of nitrogen to
nitrate. Then the reaction between nitrate and the reagents causes a yellow tint in
the sample.
REQUIRED REAGENTS
Code Description Q.ty/test Q.ty/set
HI 93767B-B* Digestion Vial 1 vial 50 vials
DEIONIZED120 Deionized Water 0.5 mL 1 bottle
PERSULFATE/N Potassium Persulfate 1 packet 50 packets
BISULFITE/N Sodium Metabisulfite 1 packet 50 packets
HI 93767-0 Total Nitrogen Reagent 1 packet 50 packets
HI 93766V-0HR** Reagent Vial 1 vial 50 vials
*
Digestion Vial identification
: N HR, red label.
**
Reagent Vial identification
: N HR, green label.
Note: Store the unused vials in their container in a cool and dark place.
REAGENT SET
HI 93767B-50 Reagents for up to 49 tests. Contains:
Box 1: HI 93767B-50 Reagent Set
Box 2: HI 93767A&B-50 Reagent Set, for Total High Range Nitrogen.
For other accessories see page 68.
REQUIRED ACCESSORIES
HI 839800-01 Hanna reactor (115 VAC)
HI 839800-02 Hanna reactor (230 VAC)
HI 740216 Test tube cooling rack (25 holes)
HI 740217 Laboratory bench safety shield
For other accessories see page 68.
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