Hanna Instruments HI 38086 User Manual

Instruction Manual

HI 38086

Calcium

Test Kit for

Irrigation Water

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.

;

SPECIFICATIONSSPECIFICATIONS

SPECIFICATIONS

SPECIFICATIONSSPECIFICATIONS

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.)

SIGNIFICANCE AND USESIGNIFICANCE AND USE

SIGNIFICANCE AND USE

SIGNIFICANCE AND USESIGNIFICANCE AND USE

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 nutrition 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).

CHEMICAL REACTIONCHEMICAL REACTION

CHEMICAL REACTION

CHEMICAL REACTIONCHEMICAL REACTION

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

INSTRUCTIONSINSTRUCTIONS

INSTRUCTIONS

INSTRUCTIONSINSTRUCTIONS

READ THE ENTIRE INSTRUCTIONS BEFORE USING THE KIT

1- Fill the plastic vessel with 50 mL

ISTR38086 02/00 PRINTED IN ITALY

of water sample (up to the mark).

2- Add 5 drops

of Buffer Reagent 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.

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 calcium 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

mg/L of calcium by 2.5.

15- Rinse all labware with demineralized water after each

analysis and shake dry.

REFERENCESREFERENCES

REFERENCES

REFERENCESREFERENCES

Vogel's, Textbook of Quantitative Chemical Analysis, 5th Ed., Longman Scientific & Technical.

HEALTH AND SAFETYHEALTH AND SAFETY

HEALTH AND SAFETY

HEALTH AND SAFETYHEALTH AND SAFETY

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

25 mL

, multiply the