Hanna Instruments | HI38058 | Owner Manual | Hanna Instruments HI38058 Owner Manual

Hanna Instruments HI38058 Owner Manual
Specifications
Instruction Manual
Range
4.0 to 10.0 as pH unit
Smallest Increment
0.5 as pH unit
Analysis Method
Colorimetric
Sample Size
5 mL
Number of Tests
300
Case Dimensions
165x150x38 mm (6.5x5.9x1.5")
Shipping Weight
215 g (7.6 oz.)
HI 38058
pH 4.0-10.0
Test Kit with
Checker Disc
Instructions
READ THE ENTIRE INSTRUCTIONS BEFORE USING THE KIT
Note:: Always shake the reagent bottle before
use.
• Using the plastic pipette, fill each glass
vial with 5 mL of sample (up to the
mark).
• Insert one of them into the left hand
opening of the checker disc. This is the
blank.
Note:
A concentration of Chlorine above 50 ppm causes interference
which inhibits the development of the color.
Significance and use
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.
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Note: Any damaged or defective item must be returned in its
original packing materials.
For best results:
Intensely colored samples will make the color matching
determination difficult and they should be adequately treated
before performing the test. Suspended matter in large amounts
should be removed by prior filtration.
• Add to the other glass vial 2 drops of pH Wide Range
Indicator. Replace the cap and mix the solution by
gently swirling. This is the reacted sample.
Examples of pH value for some liquids:
pH Value
Liquid
Sea water
7.8-8.2
Gastric juices
1.7
Milk
6.5-7
Soil
6-7 (optimum for crops)
11/08
Chemical reaction
ISTR38058R4
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:
• pH Wide Range Indicator, 1 bottle with dropper (30
mL);
• 1 checker disc (containing the 38058 disc);
• 2 glass vials with caps;
• 1 plastic pipette (3 mL).
pH Wide Range Indicator reagent reacts in contact with the
aqueous solution changing its color according to the hydrogenion concentration (pH) in the given range.
• Rotate the disc while looking at the color test windows
and stop when you find the color match. Read the value
in the result window directly in pH units.
Caution:
Ultraviolet radiation may cause fading of colors. When not
in use, keep the disc protected from light, in a cool and dry
place.
References
Vogel's, Quantitative Chemical Analysis, 5th Ed., Longman
Scientific & Technical.
• Remove the cap and insert
the reacted sample into the
right hand opening of the
checker disc.
• Hold the checker disc so
that a light source
illuminates the samples
from the back windows.
Accessories
HI 38058-100
HI 740231
Replacement reagent (300 tests)
20 ml glass cylinders with caps (2 pcs)
Safety Data Sheets
The chemicals contained in this kit may be hazardous if
improperly handled. Read the relevant Safety Data Sheet
before performing this test.
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