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Iron |
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 Methods
Iron (total & soluble; total & ferrous)
References: APHA Standard Methods, 20th ed., pp. 3-76, Method 3500-Fe B (1998). ASTM D 1068-77, Iron in Water, Test Method A.
Iron is present in nature in the form of its oxides, or in combination with silicon or sulfur. The soluble iron content of surface waters rarely exceeds 1 mg/L, while ground waters often contain higher concentrations. The National Secondary Drinking Water Standard for iron is 0.3 mg/L, as iron concentrations in excess of 0.3 mg/L impart a foul taste and cause staining. High concentrations in surface waters can indicate the presence of industrial effluents or runoff.
With the CHEMetrics tests, ferrous iron reacts with 1,10-phenanthroline to form an orange-colored chelate. To determine total iron, thioglycolic acid solution is added to reduce ferric iron to the ferrous state. The reagent formulation compensates for interference from oxidizing agents. Results are expressed as ppm
(mg/L) Fe.
Iron (total)
Reference: J. A. Tetlow and A. L. Wilson, “Determination of Iron in Boiler Feedwater,” Analyst, 1958.
CHEMetrics’ colorimetric method for determining total iron uses thioglycolic acid to dissolve particulate iron and to reduce iron from the ferric to the ferrous state. Ferrous iron then reacts with PDTS (3-(2-pyridyl)-5,6- bis(4-phenylsulfonic acid)-1,2,4-triazine disodium salt) in acid solution to form a purple-colored chelate. Results are expressed as ppm (mg/L) Fe.
Iron in Brine
Reference: D. F. Boltz and J. A. Howell, eds., Colorimetric Determination of Nonmetals, 2nd. ed., Vol. 8, p. 304 (1978).
Iron contamination in oil field brines are typically a result of corrosion processes of iron-containing metallic components and equipment. Accumulation of insoluble iron salts in a brine completion fluid can result in substantial formation damage and can significantly affect the productivity of an oil well. Quantifying total iron in brine is critical.
The Iron in Brine test method employs the ferric thiocyanate chemistry. In an acidic solution, hydrogen peroxide oxidizes ferrous iron. The resulting ferrric iron reacts with ammonium thiocyanate forming a red-orange colored thiocyanate complex, in direct proportion to the iron concentration.
The method expresses total iron content in units of mg/L. By simply dividing the measured mg/L by the density of the brine expressed in units of kg/L, the ppm value can be obtained in mg/kg. |
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| • Click to View MSDS and Kit instructions |
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 Visual Kits |
0-1 &1-10 ppm
0.05 ppm / Method: Phenanthroline |
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Cat# |
| Iron (total & ferrous) CHEMets Kit, NEW! |
K-6210 |
| | CHEMets Refill, 30 ampoules | R-6201 |
| | Activator Solution Pack, six 10 mL bottles, Shelf-life 2 years | A-6000 |
| | Low Range Comparator, Shelf-life 2 years:
0, 0.1, 0.2, 0.3, 0.4, 0.6, 0.8, 1.0 ppm | C-6001 |
| | High Range Comparator, Shelf-life 2 years:
1, 2, 3, 4, 5, 6, 7, 8, 10 ppm | C-6010 |
| | Kit comes in a plastic case and contains everything needed to perform 30 tests: Refill, Low and High Range Comparators, Activator Solution, 25 mL sample cup, instructions, and MSDS. | |
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0-1 &1-10 ppm
0.05 ppm / Method: Phenanthroline |
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Cat# |
| Iron (total & soluble) CHEMets Kit |
K-6010 |
| | CHEMets Refill, 30 ampoules | R-6001 |
| | Activator Solution Pack, six 10 mL bottles, Shelf-life 2 years | A-6000 |
| | Low Range Comparator, Shelf-life 2 years:
0, 0.1, 0.2, 0.3, 0.4, 0.6, 0.8, 1.0 ppm | C-6001 |
| | High Range Comparator, Shelf-life 2 years:
1, 2, 3, 4, 5, 6, 7, 8, 10 ppm | C-6010 |
| | Kit comes in a plastic case and contains everything needed to perform 30 tests: Refill, Low and High Range Comparators, Activator Solution, 25 mL sample cup, instructions, and MSDS. | |
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0-30 & 30-300 ppm
5 ppm / Method: Phenanthroline |
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Cat# |
| Iron (total & soluble) VACUettes Kit |
K-6010D |
| | VACUettes Refill, 30 ampoules | R-6001D |
| | Activator Solution Pack, six 10 mL bottles, Shelf-life 2 years | A-6000 |
| | Low Range Comparator, Shelf-life 2 years:
0, 5, 7.5, 10, 15, 20, 25, 30 ppm | C-6001D |
| | High Range Comparator, Shelf-life 2 years:
30, 60, 90, 120, 150, 175, 200, 250, 300 ppm | C-6010D |
| | Kit comes in a plastic case and contains everything needed to perform 30 tests (except distilled water): Refill, Low and High Range Comparators, Activator Solution, dilutor snapper cup, micro test tube, 5 mL sample cup and top, instructions, and MSDS. | |
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0-60 & 60-600 ppm
10 ppm / Method: Phenanthroline |
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Cat# |
| Iron (total & soluble) VACUettes Kit |
K-6010A |
| | VACUettes Refill, 30 ampoules | R-6001A |
| | Activator Solution Pack, six 10 mL bottles, Shelf-life 2 years | A-6000 |
| | Low Range Comparator, Shelf-life 2 years:
0, 10, 15, 20, 30, 40, 50, 60 ppm | C-6001A |
| | High Range Comparator, Shelf-life 2 years:
60, 120, 180, 240, 300, 350, 400, 500, 600 ppm | C-6010A |
| | Kit comes in a plastic case and contains everything needed to perform 30 tests (except distilled water): Refill, Low and High Range Comparators, Activator Solution, dilutor snapper cup, micro test tube, 5 mL sample cup and top, instructions, and MSDS. | |
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0-120 & 120-1200 ppm
20 ppm / Method: Phenanthroline |
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Cat# |
| Iron (total & soluble) VACUettes Kit |
K-6010B |
| | VACUettes Refill, 30 ampoules | R-6001B |
| | Activator Solution Pack, six 10 mL bottles, Shelf-life 2 years | A-6000 |
| | Low Range Comparator, Shelf-life 2 years:
0, 20, 30, 40, 60, 80, 100, 120 ppm | C-6001B |
| | High Range Comparator, Shelf-life 2 years:
120, 240, 360, 480, 600, 700, 800, 1000, 1200 ppm | C-6010B |
| | Kit comes in a plastic case and contains everything needed to perform 30 tests (except distilled water): Refill, Low and High Range Comparators, Activator Solution, dilutor snapper cup, micro test tube, 5 mL sample cup and top, instructions, and MSDS. | |
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0-1200 & 1200-12,000 ppm
200 ppm / Method: Phenanthroline |
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Cat# |
| Iron (total & soluble) VACUettes Kit |
K-6010C |
| | VACUettes Refill, 30 ampoules | R-6001C |
| | Activator Solution Pack, six 10 mL bottles, Shelf-life 2 years | A-6000 |
| | Low Range Comparator, Shelf-life 2 years:
0, 200, 300, 400, 600, 800, 1000, 1200 ppm | C-6001C |
| | High Range Comparator, Shelf-life 2 years:
1200, 2400, 3600, 4800, 6000, 7000, 8000, 10,000, 12,000 ppm | C-6010C |
| | Kit comes in a plastic case and contains everything needed to perform 30 tests (except distilled water): Refill, Low and High Range Comparators, Activator Solution, dilutor snapper cup, micro test tube, 5 mL sample cup and top, instructions, and MSDS. | |
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0-100 &100-1000 mg/L
5 mg/L / Method: Ferric Thiocyanate |
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Cat# |
| Iron in Brine CHEMets Kit |
K-6002 |
| | CHEMets Refill, 30 ampoules | R-6002 |
| | Acidifier Solution Pack, six 60 mL bottles, Shelf-life 2 years | A-6001 |
| | Activator Solution Pack, six 20 mL bottles, Shelf-life 2 years | A-6002 |
| | Low Range Comparator, Shelf-life 2 years:
0, 10, 20, 30, 40, 60, 80, 100 mg/L | C-6002 |
| | High Range Comparator, Shelf-life 2 years:
100, 200, 300, 400, 500, 600, 700, 800, 1000 mg/L | C-6012 |
| | Kit comes in a plastic case and contains everything needed to perform 30 tests (except distilled water): Refill, Low and High Range Comparators, Acidifier Solution, Activator Solution, 50 mL sample cup with cap, 1.0 mL syringe (2 ea), instructions, and MSDS. | |
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 Instrumental Kits |
0.10-2.50 ppm
PDTS |
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Cat# |
| Iron (total) Vacu-vials Kit |
K-6023 |
| | Kit comes in a cardboard box and contains everything needed to perform 30 tests: thirty ampoules, Activator Solution, 25 mL sample cup, ampoule blank, instructions, calibration table, and MSDS. | |
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0.20-6.00 ppm
Phenanthroline |
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Cat# |
| Iron (total & ferrous) Vacu-vials Kit, NEW! |
K-6203 |
| | Kit comes in a cardboard box and contains everything needed to perform 30 tests: thirty ampoules, Activator Solution, 25 mL sample cup, ampoule blank, instructions, calibration table, and MSDS. | |
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0.20-6.00 ppm
Phenanthroline |
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Cat# |
| Iron (total & soluble) Vacu-vials Kit |
K-6003 |
| | Kit comes in a cardboard box and contains everything needed to perform 30 tests: thirty ampoules, Activator Solution, 25 mL sample cup, ampoule blank, instructions, calibration table, and MSDS. | |
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1.0-25.0 ppm
Phenanthroline |
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Cat# |
| Iron (total & soluble) Vacu-vials Kit |
K-6013 |
| | Kit comes in a cardboard box and contains everything needed to perform 30 tests: thirty ampoules, Activator Solution, 25 mL sample cup, ampoule blank, instructions, calibration table, and MSDS. | |
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0.10-2.50 ppm
PDTS |
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Cat# |
| Iron (total) VVR Module |
V-6023 |
| | Vacu-vials Kit, 30 ampoules, Activator Solution, 25 mL sample cup, ampoule blank, instructions, calibration table, and MSDS. | K-6023 |
| | VVR Filter, Shelf-life 2 years | F-6023 |
| | Module comes in a cardboard box and contains everything needed to perform 30 tests: Vacu-vials Kit, VVR Filter, and instructions. | |
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0.60-6.00 ppm
Phenanthroline |
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Cat# |
| Iron (total & soluble) VVR Module |
V-6003 |
| | Vacu-vials Kit, 30 ampoules, Activator Solution, 25 mL sample cup, ampoule blank, instructions, calibration table, and MSDS. | K-6003 |
| | VVR Filter, Shelf-life 2 years | F-6003 |
| | Module comes in a cardboard box and contains everything needed to perform 30 tests: Vacu-vials Kit, VVR Filter, and instructions. | |
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1.0-12.0 ppm
Phenanthroline |
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Cat# |
| Iron (total & soluble) VVR Module |
V-6013 |
| | Vacu-vials Kit, 30 ampoules, Activator Solution, 25 mL sample cup, ampoule blank, instructions, calibration table, and MSDS. | K-6013 |
| | VVR Filter, Shelf-life 2 years | F-6013 |
| | Module comes in a cardboard box and contains everything needed to perform 30 tests: Vacu-vials Kit, VVR Filter, and instructions. | |
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Kit Components common to Iron |
| Description |
Cat# |
| | Sample Cup Pack, 25 mL (6 ea) | A-0013 |
| | Micro Test Tube Pack (10 ea) | A-0015 |
| | Dilutor Snapper Cup Pack (6 ea) | A-0018 |
| | Ampoule Blank Pack (5 ea) | A-0023 |
| | Syringe Pack, 1.0 mL (6 ea) | A-0027 |
| | Sample Cup & Cap Pack, 50 mL (6 ea) | A-0058 |
| | Sample Cup & Top Pack, 5 mL (6 ea) | A-0105 |
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