Hanna Instruments hi 3898 Benutzerhandbuch

SPECIFICATIONS

Instruction Manual

w w w . h a n n a i n s t . c o m

Dear Customer,
Thank you for choosing a Hanna Product. Please read the
instructions carefully before using the chemical test kit. It
will provide you with the necessary information for correct
use of the kit.
Remove the chemical test kit from the packing material and
examine it carefully to make sure that no damage has
occurred during shipping. If there is any noticeable damage,
notify your Dealer or the nearest Hanna office immediately.
Each kit is supplied with:
• HI 3898-0 Reagent, 4 bottles (25 mL each);
• Chloride Indicator, 1 dropper bottle (7 mL);
• 1 glass cuvet with plastic stopper;
• 2 calibrated syringes of 1.0 ml with tip.

Note:

Note: Any damaged or defective item must be returned in

its original packing materials.

Range

1000 ppm Cl

(ISO)

2000 ppm Cl

(EPA)

Analysis Method

screening test

Sample Size

2 mL

Number of Tests

100

Case Dimensions

120 x 110 x 90 mm

Shipping Weight

200 g

HI 3898

Chloride

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for COD - ISO and EP

for COD - ISO and EPAAAAA

ISTR3898R2 12/03

Specifications

Significance and Use

Chemical Reaction

USEPA : US Environmental Protection Agency
APHA : American Public Health Association
AWWA : American Water Works Association
WEF

: Water Environment Federation

ISO

: International Organization for Standardization

ppm : is equivalent to mg/L

This screening test is a rapid test to detect high chloride
levels in water and wastewater, that might cause interference
with official COD methods. The test is in accordance with
the ISO 15705:2002 method, and indicates within seconds
a YES / NO possibility of having chloride interference on
COD measurements.
The kit can be used for checking 1000 ppm chloride
concentration for the ISO COD testing, or for a 2000 ppm
chloride check for the USEPA, APHA, AWWA and WEF
methods.
If high chloride levels are detected, the sample for COD
measurements needs to be diluted before digestion.

On addition of the indicator to the sample the solution
turns yellow. Then the HI 3898-0 reagent is added and a
white precipitate is formed if chlorides are present. If the
chloride concentration is lower then 1000 ppm for ISO, or
2000 ppm for EPA, a orange-brown complex is formed. If
the solution remains yellow, high chloride concentrations
are present. See also table 1.

Table 1

Instructions

READ ALL INSTRUCTIONS BEFORE USING THE TEST KIT

• Add exactly 2.0 ml of sample to the glass cuvet, using

a Class A pipet or the Hanna HI 731342 2000 µL
automatic pipette.

Alternatively, use the 1.0 ml graduated syringe with
tip, to add 2.0 ml of sample to the glass cuvet.
Note

Note

Note: to dose exactly 2.0 ml of sample to the cuvet,
follow step (a) to step (e) twice:
(a) push the plunger completely into the syringe,
(b) insert tip into sample,
(c) pull the plunger out until the lower edge of the

plunger seal is on the 0 mL mark of the syringe,

(d) take out the syringe and clean the outside of the

syringe tip. Be sure that no drops are hanging on
the tip of the syringe, if so eliminate them.

(e) Then, keeping the syringe in vertical position above

the cuvet, push the plunger completely down into
the syringe. Now the exact amount of 1.0 mL has
been added to the cuvet.

• Add 1 drop of Chloride Indicator reagent and swirl the

cuvet to mix. The solution will turn yellow.

• At this point, it is possible to determine the chloride

concentration for COD measurement according to ISO or
EPA.

SCREENING TEST PROCEDURE for COD - ISO

• Using the other clean 1.0 mL syringe with tip, add

exactly 0.5 ml of HI 3898-0 reagent to the cuvet.

• Cap the cuvet with the plastic stopper and shake

vigorously to mix.