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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. 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
  2. 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
  3. 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
  4. 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
  5. 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
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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
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