Instruction Manual
Smallest Increment
Analysis Method
Sample Size
Number of Tests
Case Dimensions
Shipping Weight
HI 38041
Iron High Range
Test Kit with
Checker Disc
0 to 10.0 mg/L (ppm) as Fe
0.2 mg/L (ppm) Fe
5 mL
235x175x115 mm (9.2x6.9x4.5")
980 g (34.6 oz)
• Using the plastic pipette, fill each glass
vial with 5 mL of sample (up to the
• Insert one of the vials into the left
hand opening of the checker disc. This
is the blank.
• Keep the checker disc at a distance of 30-40 cm (1216") from the eyes to match the color, while having a
uniform background (e.g. a white sheet). 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 and multiply it by 2 to obtain mg/L (or
ppm) of Iron.
5 mL
Generally, ground and surface water contains no more than
1 mg/L (ppm) iron; but due to mining and industrial
drainage, higher levels of iron have been observed. Iron in
water appears to be more of a nuisance than a hazard.
The presence of iron can stain laundry and give water a
bittersweet taste.
The Hanna Test Kit determines the iron concentration in
water by conversion of the ferrous (Fe2+) state. The test is
fast and easy. The checker disc makes it simple to obtain
the iron level in water.
Note: mg/L is equivalent to ppm (parts per million).
Note: Any damaged or defective item must be returned in
its original packing materials.
Iron can exist as ferrous (Fe2+) or ferric (Fe3+) ions. The
Hanna Test Kit determines total iron levels in water via a
colorimetric method. First all ferric ions are reduced by
sodium sulfite to ferrous ions. Phenanthroline complexes with
ferrous ion to form an orange colored solution. The color
intensity of the solution determines the iron concentration.
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
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 damage, notify your Dealer or the nearest Hanna office
Each kit is supplied with:
• HI 3834-0 Reagent, packets (100 pcs);
• Deionized Water, 1 bottle (500 mL);
• 1 checker disc (containing the 38040 disc);
• 2 glass vials with caps;
• 1 plastic pipette (3 mL);
• 1 long plastic pipette.
• Use the long plastic pipette to add
to the other vial
deionized water
up to the 10 mL
mark. Replace
the cap and
10 mL
• Remove the cap
and add 1 packet
of HI 3834-0 reagent. Replace the
cap and shake to
• Wait for 3 minutes to allow reaction to occur. This is the reacted
• 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 of the windows.
For best results: Perform the reading three times and
take the average value (divide by 3 the sum of the
three numbers). Intensely colored samples will make
the color matching difficult and they should be
adequately treated before performing the test. Suspended matter in large amounts should be removed
by prior filtration.
Caution: Ultraviolet radiation may cause fading of colors.
When not in use, keep the disc protected from light,
in a cool and dry place.
Interferences: Molybdate and Molybdenum above 50 ppm,
calcium above 10000 ppm (as CaCO 3), magnesium
above 100000 ppm, chloride above 185000 ppm.
1987 Annual Book of ASTM Standard, Volume 11.01
Water (1), pages 531-535.
Standard Methods for the Examination of Water and
Wastewater, 16th Edition, pages 215-219.
The chemicals contained in this kit may be hazardous if
improperly handled. Read the relevant Health and Safety
Data Sheet before performing this test.