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General Chemicals

We provide affordable reagent-grade chemicals for laboratories and other technical uses. Browse our selection of ACS grade and research grade chemicals.

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  1. Fluoride Test, PK/30 test discs

    Macherey-Nagel, Inc.

    $94.00

    Special Price $91.69

    Pack Size: box of 30 test discs & reagent Hazard Class /UN Number: Not Restricted Storage Temp: Room Temperature Test disks and reagent for the semi-quantitative determination of fluoride ions Gradation 0 - 2 - 5 - 10 - 20 - 50 - 100 mg/l F- (each kit contains a color comparison scale) The reaction is based on the bleaching action of fluoride ions on an aluminum color complex. The fluoride test is especially suited for rapid control of fluoride concentrations. Its purpose is to define concentration ranges and to detect values which fall short of or exceed given limits. Chlorates and bromates cause white discolorations of the test paper. Addition of sodium dithionite will circumvent this interference without affecting the fluoride test. Large concentrations of sulphate also cause discolorations. Addition of barium chloride (BaCl 2 ) eliminates this interference. When testing intensely coloured solutions the color of the sample must be taken into account for evaluation. Learn More
  2. VISO ECO SULPHATE, PK/100 tests

    Macherey-Nagel, Inc.

    $93.00

    Special Price $90.57

    Pack Size: 1 kit (~100 tests) Hazard Class /UN Number: 3316 Storage Temp: Room Temperature Environmental test kit for Sulfate. Gradation of scale: 25 - 30 - 35 - 40 - 50 - 60 - 70 - 80 - 100 - 120 - 150 - 200 mg/L SO42. *This item is hazardous and cannot ship Parcel Post. It is required to ship UPS Ground* Learn More
  3. QUANTOFIX Calcium Hazardous, PK/60 strips &

    Macherey-Nagel, Inc.

    $72.90

    Special Price $71.25

    Pack Size: box of 60 strips & reagent Hazard Class /UN Number: 3316 Storage Temp: Room Temperature Test sticks and reagents for the semi-quantitative determination of calcium in solutions Gradation of scale: 0-10-25-50-100 mg/l Ca 2+ yellow to red. QUANTOFIX® Calcium *This item is hazardous and cannot ship Parcel Post. It is required to ship UPS Ground* Learn More
  4. Quantofix Cyanide Test Strips, Macherey-Nagel, PK100

    Macherey-Nagel, Inc.

    $72.00

    Special Price $70.65

    Pack Size: box of 100 strips & reagent Hazard Class /UN Number: Not Restricted Storage Temp: Room Temperature Test sticks and reagents for the semi-quantitative determination of cyanide in solutions Gradation of scale: 0-1-3-10-30 mg/l CN - white to red-violet Only free cyanides or cyanide complexes which can be decomposed with chlorine are detected. Strongly alkaline solutions (pH > 10) must be adjusted to a pH of 6 - 7 using dilute sulphuric acid. Thiocyanates in excess of 1 mg/l produce a similar coloration. Iodide and bromide above 5 mg/l cause the colour to fade as does sulphide above 20 mg/l. QUANTOFIX® Cyanide *This item is hazardous and cannot ship Parcel Post. It is required to ship UPS Ground. Learn More
  5. VISO ECO OXYGEN CHEMICAL KIT, PK/50 tests

    Macherey-Nagel, Inc.

    $71.00

    Special Price $69.04

    Pack Size: 1 kit (~50 tests) Hazard Class /UN Number: 3316 Storage Temp: Room Temperature Environmental test kit for Oxygen Gradation of scale: 0 - 1 - 2 - 3 - 4 - 6 - 8 - 10 mg/l (ppm). *This item is hazardous and cannot ship Parcel Post. It is required to ship UPS Ground* Learn More
  6. VISO ECO IRON 1 Hazardous, PK/200 tests

    Macherey-Nagel, Inc.

    $75.30

    Special Price $73.57

    Pack Size: 1 kit (200 tests) Hazard Class /UN Number: 3316 Storage Temp: Room Temperature Environmental test kit for Iron Gradation of scale: 0.04 - 0.07 - 0.10 - 0.15 - 0.20 - 0.30 - 0.50 - 1.0 mg/l (ppm). *This item is hazardous and cannot ship Parcel Post. It is required to ship UPS Ground* Learn More
  7. VISO ECO CHLORINE DIOXIDE Hazardous, PK/140 tests

    Macherey-Nagel, Inc.

    $88.00

    Special Price $86.06

    Pack Size: 1 kit (140 tests) Hazard Class /UN Number: Not Restricted Storage Temp: Room Temperature Environmental test kit for Chlorine Gradation of scale: 0.2 - 0.4 - 0.6 - 0.8 - 1.1 - 1.7 - 2.3 - 3.8 mg/l (ppm). *This item is hazardous and cannot ship Parcel Post. It is required to ship UPS Ground* Learn More
  8. VISO ECO ALUMINUM, PK/~50 tests

    Macherey-Nagel, Inc.

    $82.40

    Special Price $80.51

    Pack Size: 1 kit (~50 tests) Hazard Class /UN Number: Not Restricted Storage Temp: Room Temperature Environmental test kit for Aluminum Gradation of scale: 0.10 - 0.15 - 0.20 - 0.30 - 0.4 - 0.50 mg/l (ppm) Learn More
  9. VISO ECO CYANIDE Hazardous, PK/100 tests

    Macherey-Nagel, Inc.

    $89.30

    Special Price $87.25

    Pack Size: 1 kit (~100 tests) Hazard Class /UN Number: Not Restricted Storage Temp: Room Temperature Environmental test kit for Cyanide Gradation of scale: 0.01 -0.02 - 0.03 - 0.05 - 0.07 - 0.10 - 0.15 - 0.20 mg/l (ppm). *This item is hazardous and cannot ship Parcel Post. It is required to ship UPS Ground* Learn More
  10. VISO ECO CHLORIDE Hazardous, PK/90 tests

    Macherey-Nagel, Inc.

    $67.20

    Special Price $65.62

    Pack Size: 1 kit (~90 tests) Hazard Class /UN Number: 3316 Storage Temp: Room Temperature Environmental test kit for Chloride Gradation of scale: 0 - 1 - 2 - 4 - 7- 12 - 20 - 40 - 60 mg/l (ppm). *This item is hazardous and cannot ship Parcel Post. It is required to ship UPS Ground* Learn More
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