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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. SPECIAL INDICATOR pH 5.4-7.0 dispenser, EA/5 meter length

    Macherey-Nagel, Inc.

    $5.42

    Special Price $5.29

    Pack Size: roll of 5 meter length Hazard Class /UN Number: Not Restricted Storage Temp: Room Temperature Test papers produced by total impregnation of the paper with a pH indicator or a mixture of several indicators. Gradation of scale: <5.4 - 5.4 - 5.7 - 6.0 - 6.2 - 6.4 - 6.7 - 7.0 - >7.0 Learn More
  2. VISO ECO CALCIUM Hazardous, PK/100 tests

    Macherey-Nagel, Inc.

    $40.50

    Special Price $39.45

    Pack Size: 1 kit (~100 tests) Hazard Class /UN Number: 3316 Storage Temp: Room Temperature Environmental test kit for Calcium Gradation of scale: 5 - 50mg/l 1 drop corresponds to 5mg/l (ppm). CALCIUM TEST KIT (VISOCOLOR® ECO CALCIUM) *This item is hazardous and cannot ship Parcel Post. It is required to ship UPS Ground* Learn More
  3. MEDI-TEST COMBI 10 VET, PK/100 strips

    Macherey-Nagel, Inc.

    $46.00

    Special Price $44.81

    Pack Size: box of 100 strips Hazard Class /UN Number: Not Restricted Storage Temp: Room Temperature Urine test strip for veterinary applications including glucose, keytones, protein, blood, leukocytes, nitrite, specific gravity, pH, bilirubin and urobilinogen Learn More
  4. Quantofix Peroxide .5-25PPM Test Strips, Macherey-Nagel, PK100

    Macherey-Nagel, Inc.

    $33.30

    Special Price $32.44

    Pack Size: box of 100 strips Hazard Class /UN Number: Not Restricted Storage Temp: Room Temperature Test sticks for the semi-quantitative determination of hydrogen peroxide (H 2 O 2 ) and peroxides in solutions Gradation of scale: 0-0,5-2-5-10-25 mg/l H 2 O 2 white to blue QUANTOFIX® « Peroxide is also suited for the determination of other inorganic and organic hydroperoxides. For the determination of hydroperoxides in organic solvents the test field is moistened with a drop of water after evaporation of the solvent. Between pH 2 and 9 the reaction is independent of the pH value of the test solution. Strongly acidic solutions should be buffered with sodium acetate, alkaline solutions are adjusted to pH 5 - 7 using citric acid. Strong oxidizing agents interfere. Learn More
  5. Chlortesmo, PK/200 strips

    Macherey-Nagel, Inc.

    $58.00

    Special Price $56.49

    Pack Size: box of 200 strips Hazard Class /UN Number: Not Restricted Storage Temp: Room Temperature This test paper is used for the qualitative determination of free halogens (chlorine, bromine, iodine). In the presence of these compounds the pale yellow paper turns blue. Free nitrous acid HNO 2 (not nitrite ions) interferes, but can be destroyed by additions of amidosulphuric acid.Limit of sensitivity: 1 mg/l chlorine Instruction Sheet (For semi-quantitative determination see Ref 90709 Chlorine Test paper or Ref 91339 QUANTOFIX® Chlorine Sensitive) Learn More
  6. Fluoride Test, PK/30 test discs

    Macherey-Nagel, Inc.

    $91.10

    Special Price $88.74

    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
  7. PEHANON pH 1.8-3.8, PK/200 strip

    Macherey-Nagel, Inc.

    $19.60

    Special Price $19.09

    Pack Size: box of 200 strips Hazard Class /UN Number: Not Restricted Storage Temp: Room Temperature pH indicator papers where the indicator and color scale are combined on a single strip. Gradation of scale: 1.8 - 2.1 - 2.4 - 2.7 - 3.0 - 3.2 - 3.5 - 3.8 Learn More
  8. SPECIAL INDICATOR pH 6.4-8.0 dispenser, EA/5 meter length

    Macherey-Nagel, Inc.

    $5.42

    Special Price $5.29

    Pack Size: roll of 5 meter length Hazard Class /UN Number: Not estricted Storage Temp: Room Temperature Test papers produced by total impregnation of the paper with a pH indicator or a mixture of several indicators. Gradation of scale: <6.4 - 6.4 - 6.6 - 6.8 - 7.0 - 7.2 - 7.4 - 7.6 - 7.8 - 8.0 - >8.0 Learn More
  9. PEHANON pH 0.0-1.8, PK/200 strip

    Macherey-Nagel, Inc.

    $19.60

    Special Price $19.09

    Pack Size: box of 200 strips Hazard Class /UN Number:Not Restricted Storage Temp: Room Temperature pH indicator papers where the indicator and color scale are combined on a single strip. Gradation of scale: 0 - 0.3 - 0.6 - 0.8 - 1.0 - 1.2 - 1.5 - 1.8 Learn More
  10. Aquadur , PK/1000 individually sealed

    Macherey-Nagel, Inc.

    $304.00

    Special Price $296.10

    Pack Size: Pack of 1000 individually sealed strips Hazard Class /UN Number: Not Restricted Storage Temp: Room Temperature Test stick for the determination of water hardness. Gradation of scale: <55 · >70 · >150 · >250 ppm Learn More
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