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pH paper
ph paper

pH
Test
Strips

Organic Chemistry Molecular Model Sets, Permanent Neodymium Rare Earth Magnets, Magnifying Glasses, Test Strips, Lab Supplies, Tuning Forks


Indigo Instruments

High Accuracy pH Test Paper

We offer more varieties of accurate, reliable pH test paper for all your acid and base (alkaline) needs. Click on the links below to get more information on the best ones for your needs. All our strips feature:

  • fast response time-just seconds
  • ~50 test strips for $6.95-$8.95
  • easy to read, accurate color charts
  • white backing ensures best contrast color chart comparisons
  • stiff plastic support for dipping into tubes, gaps, etc.

pH: Acid & Base Indicator

These pH acid and base indicator strips are our most popular and are recommended instead of plain pink & blue litmus strips which only give a "yes" or "no" answer.

All 3 "acid AND base" types immediately identify acid or base solutions. Click on the images or text links immediately below to find out which is best for your application.

Click on images for specs.; on "Each" for quantity discounts.
Science Fair:
Acid-Base
pH 1-14 Testing
Alkaline Water:
Acid-Base
pH 5-9 Testing
Urine & Saliva:
Acid-Base
pH 5.5-8 Testing
Click on "Buy/Quote" button for quantity prices & freight options.
P/NDescription QtyUnit
33811pH 1-14 strips, ~50/pack1-98.25
33812-5090pH 5-9 strips, ~50/pack1-96.95
33812-5580pH 5.5-8 strips, ~50/pack1-98.95

pH Acidic Indicator

pH Acid Indicator Only

If you know your solution is acidic, one of these 3 pH acid indicator stripss will give you the fast, accurate answers you need. Click on the images or text links immediately below to find out which is best for your application.

Click on images for specs.; on "Each" for quantity discounts.
Strong Acid:
Test pH 0-2.5
Medium Acid:
Test pH 3-6
Mild Acid:
Test pH 4-7
Click on "Buy/Quote" button for quantity prices & freight options.
P/NDescription QtyUnit
33812-0025pH 0-2.5 strips, ~50/pack1-97.25
33812-3060pH 3-6 strips, ~50/pack1-97.25
33812-4070pH 4-7 strips, ~50/pack1-97.25

pH Basic Indicator

pH Basic Indicator Papers Only

If you know your solution is basic (alkaline) use one of these 2 pH alkaline indicator papers to you the fast, accurate answers you need. Click on the images or text links immediately below to find out which is best for your application.

Click on images for specs.; on "Each" for quantity discounts.
Mild Alkali
Test pH 7-10
Strong Alkali
Test pH 10-13
Click on "Buy/Quote" button for quantity prices & freight options.
P/NDescription QtyUnit
33812-7010pH 7-10 strips, ~50/pack1-97.25
33812-1013pH 10-13 strips, ~50/pack1-97.25

Here is a pretty extensive list of: that include plants, household chemicals & more. A great idea for science fair & just general interest.

Click here for more information on the and some examples of different materials.

Advanced users might be interested in a computer based pH calculator.




INDIGO® INSTRUMENTS

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(519) 746-4761 Fax: (519) 747-5636
Or ORDER toll-free at: 1 (877) 746-4764

Top Organic Chemistry Molecular Model Sets, Permanent Neodymium Rare Earth Magnets, Magnifying Glasses, Test Strips, Lab Supplies, Tuning Forks





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pH litmus paper