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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.

    $5.60

    Special Price $5.47

    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.

    $41.80

    Special Price $40.76

    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.

    $47.40

    Special Price $46.30

    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.

    $34.30

    Special Price $33.52

    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.

    $59.75

    Special Price $58.37

    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.

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

    Macherey-Nagel, Inc.

    $19.90

    Special Price $19.72

    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.

    $5.60

    Special Price $5.47

    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.

    $19.90

    Special Price $19.72

    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.

    $312.00

    Special Price $305.93

    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
  11. QUANTOFIX Glutaraldehyde, PK/100 strips

    Macherey-Nagel, Inc.

    $48.20

    Special Price $47.21

    Pack Size: box of 100 strips Hazard Class /UN Number: Not Restricted Storage Temp: Room Temperature Test sticks for the semi-quantitative determination of glutaraldehyde. 0 - 0.5 - 1 - 1.5 - 2 - 2.5 mg/l Learn More
  12. QUANTOFIX EDTA, PK/100

    Macherey-Nagel, Inc.

    $35.30

    Special Price $34.53

    Pack Size: box of 100 Hazard Class /UN Number: Not Restricted Storage Temp: Room Temperature Gradation of scale: 0 - 100 - 200 - 300 - 400 mg/l EDTA Learn More
  13. UNIVERSAL pH 1-14 DISPENSER, EA/5 meter length

    Macherey-Nagel, Inc.

    $5.60

    Special Price $5.47

    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: 1 - 2 - 3 - 5 - 6 - 7 8 - 9 - 10 - 12 - 14 Learn More
  14. Litmus paper, neutral 5.0-8.0, EA/100

    Macherey-Nagel, Inc.

    $4.00

    Special Price $3.90

    Pack Size: booklet of 100 Hazard Class /UN Number: Not Restricted Storage Temp: Room Temperature Learn More
  15. PEHANON pH 10.5-13.0, PK/200 strip

    Macherey-Nagel, Inc.

    $19.90

    Special Price $19.72

    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: 10.5 - 11.0 - 11.5 - 12.0 - 12.5 - 13.0 Learn More
  16. Chromium test paper ,see Quantofix Chromate 91301 as an alternative, Hazardous

    Macherey-Nagel, Inc.

    $35.60

    Special Price $34.77

    Pack Size: box of 200 strips Hazard Class /UN Number: Not Restricted Storage Temp: Room Temperature This test paper shows violet spots on a white background upon application of solutions containing chromium. The reaction is based on the presence of chromium as chromate. Cr 3+ ions must be converted to chromate. Interferences caused by mercury salts or molybdates are readily circumvented. Limit of sensitivity: 2 mg/l Cr 3+ corresponding to 5 mg/l chromate Note: Non-destructive tests for the detection of chromium in metal alloys are carried out as follows: Apply a drop of a proper acid solution (1 part hydrochloric acid 37 % + 4 parts hydrogen peroxide 3 %) to the degreased steel surface, wait 10 to 30 seconds, add some drops of sodium hydroxide solution and cover the precipitate with filter paper. Press the chromium test paper on top of the filter paper. In the presence of chromium, a violet spot appears when the test paper is bathed in dilute sulphuric acid.Limit of sensitivity: 0.1 % Cr *TEST PROCEDURE IS INTRICATE, PRODUCT NOT RECOMMENDED FOR USE BY NON CHEMIST* REQUEST TEST PROCEDURE PRIOR TO ORDERING. Chromium test paper *TEST PROCEDURE IS INTRICATE, PRODUCT NOT RECOMMENDED FOR USE BY NON CHEMIST* REQUEST TEST PROCEDURE PRIOR TO ORDERING (see QUANTOFIX® Chromate 91301 as an alternative) *Additional reagents are required to perform this test, they are not included with this item. Learn More
  17. SPECIAL INDICATOR pH 9.0-13.0 dispenser, EA/5 meter length

    Macherey-Nagel, Inc.

    $5.60

    Special Price $5.47

    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: 9.0 - 9.5 - 10.0 - 10.5 - 11.0 - 11.5 - 12.0 - 12.5 - 13.0 Learn More
  18. Humidity Indicator, PK/1000

    Macherey-Nagel, Inc.

    $163.00

    Special Price $158.40

    Pack Size: pack of 1000 Hazard Class /UN Number: Not Restricted Storage Temp: Room Temperature Relative air humidity 8% RH Learn More
  19. Wator, PK/50 pieces 78

    Macherey-Nagel, Inc.

    $50.00

    Special Price $48.82

    Pack Size: box of 50 pieces (78 x 40 mm) Hazard Class /UN Number: Not Restricted Storage Temp: Room Temperature Indicator paper for the determination of water in butter according to DIN 10 311 The storage life of butter is closely linked to the size of the water and buttermilk particles it contains. For this reason it is important to check the water distribution during the manufacturing process and before storing larger quantities. The WATOR indicator paper allows an exact means for controlling the water distribution. Evaluation charts according to the 5-point evaluation system are available on request. On contact with water WATOR develops dark-blue spots, the size and number of which is correlated to the distribution of the water in the butter. Instruction Sheet Learn More
  20. QUANTOFIX Tin PK/100 strips

    Macherey-Nagel, Inc.

    $51.00

    Special Price $49.82

    Pack Size: box of 100 strips Hazard Class /UN Number: Not Restricted Storage Temp: Room Temperature Test sticks for the semi-quantitative determination of tin(II)-ions in solutions Gradation of scale: 0-10-25-50-100-250-500 mg/l Sn 2+ white to dark blue Tetravalent tin has to be reduced. To do this, add 0.5 ml hydrochloric acid 37 % and some magnesium turnings to 5 ml of the test solution and heat to boiling temperature. Hexacyano-ferrates interfere > 10 mg/l (yellow-brown colour) and must be decomposed by evaporation with sulphuric acid 96 %. *TEST PROCEDURE IS INTRICATE, PRODUCT NOT RECOMMENDED FOR USE BY NON CHEMIST* REQUEST TEST PROCEDURE PRIOR TO ORDERING. Learn More
  21. Phosphatesmo MI, PK/50 strips

    Macherey-Nagel, Inc.

    $41.60

    Special Price $40.61

    Pack Size: box of 50 strips Hazard Class /UN Number: Not Restricted Storage Temp: REF Test paper for the determination of alkaline phosphatase in milk. Phosphatesmo MI *Item is shipped cold*, express service may be required during summer months. Shipping charge shown here will not reflect additional charge. You will be contacted prior to shipping with correct cost. Learn More
  22. UNIVERSAL pH 1-14 PAPER 26 feet x 5/8 inch, EA/26 ft length

    Macherey-Nagel, Inc.

    $9.20

    Special Price $8.63

    Pack Size: roll of 26 ft length x 5/8 inches 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: 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 -13 -14 Learn More
  23. 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
  24. Lead Acetate Paper Refill, PK/3 reels

    Macherey-Nagel, Inc.

    $16.00

    Special Price $15.60

    Pack Size: Refil pack of 3 reels Hazard Class /UN Number: Not Restricted Storage Temp: Room Temperature Lead acetate paper is a filter paper impregnated with lead acetate. It reacts with hydrogen sulfide changing color from white to brown-black. Lead acetate reacts with Hydrogen sulfide to yield black lead sulfide. In the presence of low hydrogen sulfide concentrations, however, the white paper assumes a brown color only. Limit of sensitivity: 1 drop of a solution of 5 mg/liter sulfide gives a brown ring, which is just visible. Presentation: dispenser (reel 5 m x 7 mm) Learn More
  25. TRITEST pH 1-11 DISPENSER, EA/5 meter length

    Macherey-Nagel, Inc.

    $17.20

    Special Price $16.76

    Pack Size: roll of 5 meter length Hazard Class /UN Number: Not Restricted Storage Temp: Room Temperature Learn More
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