Hanna Instruments HI 83214 - Manual (Page 30)

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Nitrogen, Total LR
NITROGEN, TOTAL LOW RANGE
SPECIFICATIONS
Range 0.0 to 25.0 mg/L N
Resolution 0.1 mg/L
Accuracy ±1.0 mg/L or ±5 % 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 93767A-B* Digestion Vial 1 vial 50 vials
DEIONIZED120 Deionized Water 2 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-0LR** Reagent Vial 1 vial 50 vials
* Digestion Vial identification: N LR, green label.
** Reagent Vial identification: N LR, red label.
Notes: Store the unused vials in their container in a cool and dark place.
REAGENT SET
HI 93767A-50 Reagents for up to 49 tests. Contains:
Box 1: HI 93767A-50 Reagent Set
Box 2: HI 93767A&B-50 Reagent Set, for Total Low 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.