Instruction Manual
www.hannainst.com
DearCustomer,
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 a 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
occurredduringshipping.Ifthereisanynoticeabledamage,
notify your Dealer or the nearest Hanna office immediately.
Each kit is supplied with:
•HI 3880-0 pH 4.0-6.5 Reagent, 1 bottle with
dropper (25 mL);
•Dechlorinating Reagent, 1 bottle with dropper (10
mL), to be used in presence of chlorine above 50
ppm;
•1 color comparator cube.
Note: Any damaged or defective item must be returned in
its original packing materials.
HI 3880/O
pH 4.0-6.5
Test Kit
ISTR3880/OR2 11/02 PRINTED IN ITALY
pH represents acidity or alkalinity of an aqueous solution
and is proportional to the hydrogen-ion concentration of the
solution. Under neutral conditions water is dissociated into
the OH-and H+ions in equal ratio and hence it has a pH
of 7. When bases or acids are added to a water solution
they ionize, increasing the concentration of OH- or H+,
respectively. Thus solutions with a pH of 1-3 contain strong
acids, whereas those with a pH of 4-6 contain weak acids.
Weak bases result in solutions of pH 8-10 and strong bases
in pH of 11-13.
Examples of pH value for some liquids:
LiquidLiquid
LiquidLiquid
Liquid pH ValuepH Value
pH ValuepH Value
pH Value
sea water 7.8-8.2
gastricjuices 1.7
milk 6.5-7
soil 6-7 (optimum for crops)
Range 4.0 to 6.5 as pH unit
Smallest Increment 0.5 as pH unit
Analysis Method Colorimetric
Sample Size 5 mL
Number of Tests 100
CaseDimensions 115x102x82 mm (4.5x4.0x3.2")
Shipping Weight 150 g (5.3 oz.)
SPECIFICATIONS
SIGNIFICANCE AND USE
CHEMICAL REACTION
HI 3880-0 Hanna Reagent reacts in contact with the
aqueoussolutionchangingitscoloraccordingtothehydrogen-
ion concentration (pH) in the given range.
READ THE ENTIRE INSTRUCTIONS BEFORE USING THE KIT
•Note: always shake the HI 3880-0 reagent bottle
beforeuse.
• Fill the color comparator cube with 5 mL of
the sample.
• In case of concentration of chlorine above 50 ppm, add
onedrop oftheDechlorinating Reagent tothesample.
Replace the cap and mix by inverting the cube
severaltimes.
• Add 3 drops of reagent HI 3880-0.
• Replace the cap and mix the
solution by inverting the
cube several times.
INSTRUCTIONS
REFERENCES
Vogel's
Quantitative Chemical Analysis
5th Ed.
Longman Scientific & Technical.
HEALTH AND SAFETY
The chemicals contained in this kit may be hazardous if
improperly handled. Read Health and Safety Data Sheet
before performing this test.
• Determine which color best
matches the solution in the cube
and record the result as pH unit.
• It is better to match the color with a white sheet at
about 10 cm behind the color comparator cube.
Note: To measure pH in the 6.0-8.5 range use the HI
3881 pH 6.0-8.5 Test Kit.
To measure pH in the 7.5-10.0 range use the HI
3886 pH 7.5-10.0 Test Kit.
