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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. Ag-FIX Test Sticks, PK/100 strips

    Macherey-Nagel, Inc.

    $35.80

    Special Price $34.96

    Pack Size: box of 100 strips Hazard Class /UN Number: Not Restricted Storage Temp: Room Temperature During operation of a fixing bath it is necessary to check the silver content as well as the pH in regular intervals to insure proper operation. A decrease in fixing capacity is noted as an increase in silver concentration of an alteration of the pH value. The convenient Ag-Fix test sticks allow a simultaneous semi-quantitative determination of silver and the pH value in photographic solutions. With these sticks two paper zones are sealed onto the lower end of a plastic strip, one for the determination of the silver concentration and one for pH measurement. Silver: 0.5 · 1 · 2 · 3 · 5 · 7 · 10 g/l Ag+. pH 4 · 5 · 6 · 7 · 8 Learn More
  2. Aluminum test paper /Also Zirconium test paper - see Quantofix Aluminum 91307 , PK/100 strips

    Macherey-Nagel, Inc.

    $35.60

    Special Price $34.77

    Pack Size: box of 100 strips Hazard Class /UN Number: Not Restricted Storage Temp: Room Temperature This test paper shows bright red spots on a yellow background in the presence of aluminium ions (Al 3+ ). Fe, Zn, Cu and Mn interfere with the determination of aluminium. Under certain reaction conditions aluminium test paper can be used for the determination of zirconium. Limit of sensitivity: 10 mg/l Al 3+ *TEST PROCEDURE IS INTRICATE, PRODUCT NOT RECOMMENDED FOR USE BY NON CHEMIST* REQUEST TEST PROCEDURE PRIOR TO ORDERING * Instruction Sheet For semi-quantitative determination of Aluminum see Quantofic Aluminum Ref 91307. Aluminum test paper **Also Zirconium test paper *TEST PROCEDURE IS INTRICATE, PRODUCT NOT RECOMMENDED FOR USE BY NON CHEMIST* REQUEST TEST PROCEDURE PRIOR TO ORDERING *Additional reagents are required to perform this test, they are not included with this item. Learn More
  3. Ammonia test strips for aquariums, PK/25 strips

    Macherey-Nagel, Inc.

    $24.70

    Special Price $24.09

    Pack Size: box of 25 strips Hazard Class /UN Number: Not Restricted Storage Temp: Room Temperature Test strip for the determination of ammonia In aquariums. Aquarium owners can perform this test in less than a minute. Test provides information critical to aquatic life. Color tab gradations at 0, 0.5, 1, 3 and 6 mg/l NH4+ Learn More
  4. Ammonium Hydroxide, ACS, Amber Glass, 500mL, EA1

    LabChem

    $40.30

    Special Price $26.00

    Ammonium Hydroxide, ACS 500mL, Shelf Life N/Amonths Amber Glass Learn More
  5. Ammonium Hydroxide, ACS, Clear Glass, 2.5L, EA1

    LabChem

    $66.00

    Special Price $42.53

    Ammonium Hydroxide, ACS 2.5L, Shelf Life N/Amonths Clear Glass Learn More
  6. Ammonium Hydroxide, ACS, Clear Glass, 6X2.5L, CS6

    LabChem

    $225.60

    Special Price $145.53

    Ammonium Hydroxide, ACS 6X2.5L, Shelf Life N/Amonths Clear Glass, CS6X2.5L Learn More
  7. Ammonium Hydroxide, ACS, PVC Coated, 2.5L, EA1

    LabChem

    $76.20

    Special Price $49.53

    Ammonium Hydroxide, ACS 2.5L, Shelf Life N/Amonths PVC Coated Learn More
  8. Ammonium Hydroxide, ACS, PVC Coated, 6X2.5L, CS6

    LabChem

    $286.00

    Special Price $186.00

    Ammonium Hydroxide, ACS 6X2.5L, Shelf Life N/Amonths PVC Coated, CS6X2.5L Learn More
  9. Ammonium test paper Hazardous PK/200 strips

    Macherey-Nagel, Inc.

    $58.70

    Special Price $57.36

    Pack Size: box of 200 strips Hazard Class /UN Number: 3316 Storage Temp: Room Temperature This test paper can be used for the detection of ammonium ions as well as for gaseous ammonia. The white paper turns brownish-yellow in the presence of ammonium ions or NH3. This test paper is specific for the determination of NH 4 + . Limit of sensitivity: 10 mg/l NH 4 + Instruction Sheet *For semi-quantitative determination of Ammonium see QUANTOFIX® Ammonium Ref 91315 or Ref 90714 Ammonia Test Paper. PRODUCT NOT RECOMMENDED FOR USE BY NON CHEMIST* REQUEST TEST PROCEDURE PRIOR TO ORDERING. *Additional reagents are required to perform this test, they are not included with this item*. Learn More
  10. Antimony test paper , PK/200 strips

    Macherey-Nagel, Inc.

    $47.10

    Special Price $46.00

    Pack Size: box of 200 strips Hazard Class /UN Number: Not Restricted Storage Temp: Room Temperature This test paper shows orange-red spots on a yellow background in the presence of antimony ions [Sb(III)]. Pentavalent antimony, i.e. Sb(V), has to be reduced to Sb(III) with metallic magnesium.This test paper is specific for antimony.Limit of sensitivity: 5 mg/l Sb 3+ *TEST PROCEDURE IS INTRICATE, PRODUCT NOT RECOMMENDED FOR USE BY NON CHEMIST* REQUEST TEST PROCEDURE PRIOR TO ORDERING. Antimony test paper *TEST PROCEDURE IS INTRICATE, PRODUCT NOT RECOMMENDED FOR USE BY NON CHEMIST* REQUEST TEST PROCEDURE PRIOR TO ORDERING. *Additional reagents are required to perform this test, they are not included with this item. Learn More
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