Hanna Instruments HI 3839 - Manual

SPECIFICATIONS
Instruction Manual
www.hannainst.com
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 dam-
age, notify your Dealer or the nearest Hanna office
immediately.
Each kit is supplied with:
• Two calibrated vessels (20 and 50 mL);
• Phenolphthalein Indicator (10 mL);
• HI 3839-0 Reagent Titrant Solution (120 mL);
• 1 calibrated syringe with tip.
Note: Any damaged or defective item must be returned in
its original packing materials.
Range 0 to 1 g/L (ppt) OH –
0 to 10 g/L (ppt) OH –
Analysis Method Acid titration using
phenolphthalein indicator
Sample Size 5 mL and 50 mL
Number of Tests 110 (average)
Case Dimensions 200x120x60 mm (7.9x4.7x2.4")
Shipping Weight 460 g (17.2 oz.)
SPECIFICATIONS
HI 3839
Hydroxide
Test Kit
ISTR3839R3 03/02 PRINTED IN ITALY
In electrolytic copper plating, an alkaline solution is re-
quired in the bath. The process involves hydroxide ions
reacting with formaldehyde to form hydride ions. These ions
then reduce copper. The monitoring of hydroxide concentra-
tion in the bath is essential to optimize the performance of
the bath. The Hanna Test Kit measures hydroxide levels
using a fast and easy titrametric method. The portable case
gives user the versatility to use the kit practically anywhere.
SIGNIFICANCE AND USE
CHEMICAL REACTION
The hydroxide ion concentration is determined by a titra-
tion. The hydroxide ions react with hydrochloric acid, until
an endpoint is reached, where all the hydroxide ions have
reacted. The addition of phenolphthalein determines this
endpoint, by changing from pink to a colorless solution.
HCl+OH – → H
2
O+Cl –
REFERENCES
1987 Annual Book of ASTM Standard, Volume 11.01 Water
(1), pages 519-521.
ACCESSORIES
HI 3839-100 Spare reagents (100 tests)
INSTRUCTIONS
READ ALL THE INSTRUCTIONS BEFORE USING THE TEST KIT
Determination in the 0 to 10 g/L Hydroxide
• Remove the cap from the small plastic
vessel. Rinse the plastic vessel with
water sample, fill to the 5 mL mark
and replace the cap.
• Add 1 drop of Phenolphthalein Indicator through the
cap port, and mix carefully swirling the vessel in tight
circles. The solution turn pink or red, if hydroxide ions
are present.
• Take the titration syringe and push plunger completely
into the syringe. Insert tip into HI 3839-0 Reagent
Titrant Solution and pull plunger out until the lower
edge of the plunger seal is on the 0 mL mark of the
syringe.
Note: push and twist pipet tip onto tapered end of
syringe ensuring an airtight fit.
• Place syringe tip into the cap port of
the plastic vessel and slowly add the
titration solution drop by drop, swirling
to mix after each drop. Continue adding
titration solution until the solution in
the plastic vessel turns colorless.
x 10 = OH –
• Read off the milliliters of titration solution from the
syringe scale, and multiply by 10 to obtain g/L (ppt)
OH
– .
Determination in the 0 to 1 g/L Hydroxide
If results are lower than 1 g/L, the precision of the test can
be improved as follows.
• Remove the cap from the large
plastic vessel. Rinse the plastic
vessel with water sample, fill to
the 50 mL mark and replace the
cap.
• Proceed with the test as described before. Read the
result directly off the syringe to obtain g/L (ppt) hydroxide
in the aqueous sample.
= OH –
The chemicals contained in this kit may be hazardous if
improperly handled. Read Health and Safety Data Sheet
before performing this test.
HEALTH AND SAFETY