Hanna Instruments hi 38086 Benutzerhandbuch

Instruction Manual

www.hannainst.com

Dear Customer,
Thank you for choosing a Hanna Product.
Please read the instruction sheet carefully before using the

test kit. It will provide you with the necessary information

for correct use of the kit. If you need additional information,

do not hesitate to e-mail us at tech@hannainst.com.
Remove the 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:

• Buffer Reagent, 1 bottle with dropper (30 mL);
• Oxalate Reagent, packet powder (100 pcs);
• Deionized Water, 1 bottle (500 mL);
• 1 long glass test tube (50 mL);
• 1 calibrated plastic vessel (50 mL);
• 1 long plastic pipette (1 mL);
• 1 plastic spoon;
• 1 graduated card;
• 1 line card.

Note: Any damaged or defective item must be returned in

its original packing materials.

HI 38086

Calcium

Test Kit for

Irrigation Water

ISTR38086 02/00 PRINTED IN ITALY

Calcium presence in water supplies results from passage over
deposits of limestone, dolomite, gypsum and gypsiferous
shale. Its concentration may extend from 0 to several

hundred milligrams per liter, depending on its source and
treatment. Calcium is necessary in plant and animal nutri-
tion since it is an essential constituent of bones, shells and
plant structures.
Calcium in water as carbonate is one of the primary
components of water hardness which can cause pipe or tube
scaling.
Note: mg/L is equivalent to ppm (parts per million).

SPECIFICATIONS

SIGNIFICANCE AND USE

CHEMICAL REACTION

READ THE ENTIRE INSTRUCTIONS BEFORE USING THE KIT

1- Fill the plastic vessel with 50 mL

of water sample (up to the mark).

INSTRUCTIONS

The Hanna Test Kit determines Calcium in irrigation water
via a turbidimetric method. Hanna reagents react selec-
tively with calcium to form a white suspension. The developed
turbidity is proportional to calcium concentration.

2- Add 5 drops

of Buffer Re-

agent and
swirl to mix.

3- Add 1 packet of Oxalate

Reagent and mix for 30

seconds with the plastic

spoon. Some deposits may

remain, but they do not

affect the measurement.

4- Wait for 5 minutes to allow reaction

to complete. If Calcium is present,

the solution will become turbid.

5- Using the spoon, swirl gently the

reacted sample.

6- Place the glass test

tube on the Line
card

and look from

the top of the tube
at one of the
black stripes on
the Line card. Use

the pipette to fill
the tube with the
reacted sample
until the black
stripe completely
disappears. To
help in detecting

the endpoint,
move the test tube from one black stripe to the other
until they are both no longer visible.

Range

0 to 125 mg/L (ppm) as Ca
0 to 250 mg/L (ppm) as Ca

Smallest Increment 1 mg/L [in the 0-125 mg/L range]

2 mg/L [in the 0-250 mg/L range]

Analysis Method

Turbidimetric

Sample Size

50 mL or 25 mL

Number of Tests

100

Case Dimensions

235x175x115 mm (9.2x6.9x4.5")

Shipping Weight

950 g (33.5 oz.)

7- Hold the tube close to the Graduated

card

as shown in the figure.

8- Read directly from the Graduated card

the concentration in mg/L (ppm) of cal-

cium that corresponds to the level of the

liquid in the test tube.

9- In case the black stripe on the Line card disappears

with the liquid level under the 125 ppm mark, the
calcium concentration is higher than 125 ppm and the
original sample needs to be diluted. In this case perform
the test as follows.

10- Fill the plastic vessel with water

sample up to the 25 mL mark.

11- Add Deionized Water up to the

50 mL mark.

12- Follow the instructions from step

2 to step 7.

13- Read from the Graduated card the value in correspon-

dence of the level of the liquid in the test tube and

multiply it by 2 to obtain the concentration in mg/L

(ppm) of calcium.

14- To convert the reading in mg/L of CaCO

, multiply the

mg/L of calcium by 2.5.

15- Rinse all labware with demineralized water after each

analysis and shake dry.

The chemicals contained in this kit may be hazardous if
improperly handled. Read the relevant Health and Safety
Data Sheet before performing this test.

HEALTH AND SAFETY

REFERENCES

Vogel's, Textbook of Quantitative Chemical Analysis, 5

Ed.,

Longman Scientific & Technical.

25 mL