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Whatman offers a range of pH indicator and test papers to meet
your specific needs. Made with traditional Whatman quality,
these products combine ease-of-use with unsurpassed accuracy and
consistency.
The convenience of using indicator papers for the rapid
determination of pH values has led to many applications in
laboratories and industry.
Features and Benefits
- Instant pH readings
- Accurate for a wide range of routine pH testing
- Inexpensive
- Convenient and portable for field use
pH Indicators
Strips - Type CF
Individual plastic support strips carry four different segments
of dye-impregnated indicator papers. The resulting combination
of colour differences gives an extremely clear and accurate
visual pH value. All the dyes are chemically bonded to the paper
and cannot be leached into solution; problems associated with
contamination of the sample and resultant anomalous readings are
avoided.
Strips Type CS
Each test strip has a central segment of indicator dye and,
printed alongside, 8 or more different colour segments marked
with corresponding pH values for matching purposes. The pH test
value can be read off by direct comparison of the test strip
colour and the colour bars. Ideal for coloured solutions, when
any changes in colour of the paper stock are automatically
cancelled out.
Dispensers Type TC
The strip has 3 separate indicator dye colour bands. The unique
combination of colour change resulting from each test is
compared with the colour-coded comparison chart, printed on the
dispenser, giving improved speed and accuracy in reading.
Dispensers Type SR
A full range and some narrow ranges in this popular pH indicator
dispenser.
Indicator Books
The book format is particularly suitable for educational and
industrial use. In schools they are economical because the
amount of paper per student can be carefully controlled.
Acid-Alkali Test Papers
Litmus Blue and Litmus Red
These easy-to-use test papers facilitate a general test for acid
or alkaline reaction. The change occurs around pH 5-8. They are
particularly recommended for educational use.
Congo Red
This test paper changes colour from blue to red in the range pH
3-5 for the determination of neutralization point in strong
acid/weak alkali reactions.
Phenolphthalein
This white paper changes to pink at pH 8.3 and becomes red at pH
10. It is useful for the determination of the neutralization
point in weak acid/strong alkali reactions.
Specialized Test Papers
Lead Acetate Test Paper
Used for detecting hydrogen sulphide, this rapid qualitative
test paper when wetted with distilled water can detect as little
as 5 ppm of H2S in the atmosphere or in a gas stream. Hydrogen
peroxide can be detected with this paper by pre-blackening the
paper in H2S. Concentrations as low as 4 ppm can be detected.
Potassium Iodide Test Paper
Used for detecting chlorine and other oxidizing agents. In acid
solution, oxidizing agents react with the iodide in the test
paper to liberate iodine. The paper will turn blue in the
presence of an oxidizing agent (e.g., CI2, Br2, H2O2, HNO2,
etc.).
| Ordering Information
- pH Indicator Papers |
| Catalog Number |
Type |
Description |
pH Range |
pH Unit Graduation |
Dimensions |
Packaging |
| Strips |
| 2613-991 |
CF |
Color Bonded |
014 |
1.0 |
11 mm x 100 mm |
100 Strips |
| 2614-991 |
CF |
Color Bonded |
4.510.0 |
0.5 |
11 mm x 100 mm |
100 Strips |
| 2612-990 |
CS |
Integral Comparison Strip |
1.012.0 |
1.0 |
11 mm x 100 mm |
200 Strips |
| 2626-990 |
CS |
Integral Comparison Strip |
1.83.8 |
0.20.3 |
11 mm x 100 mm |
200 Strips |
| 2627-990 |
CS |
Integral Comparison Strip |
3.85.5 |
0.20.3 |
11 mm x 100 mm |
200 Strips |
| 2628-990 |
CS |
Integral Comparison Strip |
5.26.8 |
0.20.3 |
11 mm x 100 mm |
200 Strips |
| 2629-990 |
CS |
Integral Comparison Strip |
6.08.1 |
0.3 |
11 mm x 100 mm |
200 Strips |
| 2630-990 |
CS |
Integral Comparison Strip |
8.09.7 |
0.20.3 |
11 mm x 100 mm |
200 Strips |
| 2631-990 |
CS |
Integral Comparison Strip |
9.512.0 |
0.5 |
11 mm x 100 mm |
200 Strips |
| Dispensers |
| 2611-628 |
TC |
Three Colors |
1.011.0 |
1.0 |
7 mm x 5 m |
1 Dispenser |
| 2600-100A |
SR |
Standard Full Range |
1.014.0 |
1.02.0 |
7 mm x 5 m |
1 Dispenser |
| 2600-101A |
SR |
Standard Narrow Range |
0.55.5 |
0.51.0 |
7 mm x 5 m |
1 Dispenser |
| 2600-102A |
SR |
Standard Narrow Range |
4.07.0 |
0.5 |
7 mm x 5 m |
1 Dispenser |
| 2600-103A |
SR |
Standard Narrow Range |
6.08.0 |
0.5 |
7 mm x 5 m |
1 Dispenser |
| 2600-104A |
SR |
Standard Narrow Range |
8.010.0 |
0.5 |
7 mm x 5 m |
1 Dispenser |
| Ordering Information
- Test Papers |
| Catalogue Number |
Description |
Packaging |
| Acid Alkali Test
Papers |
| Dispensers |
| 2600-201A |
Litmus Blue |
Pack of 1 Dispenser |
| 2600-202A |
Litmus Red |
7 mm x 5 m |
| 2600-203A |
Congo Red |
|
| 2600-204A |
Phenolphthalein |
|
| Books |
| 2600-601 |
Litmus Blue |
Carton of 10 Packs of 10 Books |
| 2600-602 |
Litmus Red |
20 Leaves per Book |
| 2600-500 |
pH Indicator Booklet pH 111 |
10 Strips per Book
10 Books per Pack
20 Packs per Carton |
| Specialized Test
Papers |
| Dispensers |
| 2602-501A |
Lead Acetate |
Pack of 1 Dispenser |
| 2602-500A |
Potassium Iodide |
7 mm x 5 m |
Universal Indicator papers
Universal indicator papers have been impregnated with a
mixture of several indicators. On contact with the sample
solution they assume a particular colour. A check against the
colour comparison table supplied allows the pH to be determined.
| Ordering Information
- PANPEHA universal indicator papers |
| Catalogue Number |
Measuring pH range |
pH color change |
Size (mm) |
Qty/Pkg |
| PANPEHA |
| 10 362 030 |
1-11 |
1 |
7 mm x 5 m |
1 |
| PANPEHA Plus* |
| 10 362 000 |
0-14 |
1 |
6 x 85 |
100 |
| 10 362 010 |
2-9 |
0.5 |
6 x 85 |
100 |
| PANPEHA Nr. 112 |
| 10 360 005 |
0-14 |
0.5/1** |
10 x 75 |
200 |
| Litmus blue |
| 10 360 300 |
8-5 |
blue-red |
10 x 75 |
100 |
| Litmus red |
| 10 360 400 |
5-8 |
red-blue |
10 x 75 |
100 |
| Phenolphthalein |
| 10 360 700 |
8.3-10 |
white-red |
10 x 75 |
100 |
* non-bleeding
** from pH 0-9 in 0.5 pH steps; from pH 9-14 in 1 pH steps
Clinical Papers
Antibiotic assay disks
For determining the type of causal agent of infectious
diseases and for checking their sensitivity to antibiotics and
chemotherapeutic agents in vitro by means of the inhibition zone
determination method. The antibiogram allows rational and
selective chemotherapy. The test disks are coated with
chemotherapeutic agents, placed on the inoculated nutrient agar
and incubated. The size of the inhibition zone is a measure for
the effectiveness of the substances.
Papers for clinical applications
- Grade 557: Tallquist hemoglobin scale (for direct
rapid testing of the hemoglobin value in blood).
- Grade 470: Soft surface. For gelatinous samples.
Used for the absorption of culture media, as blotting paper,
for electrophoresis and amino acid chromatography.
| Ordering Information
- Antibiotic assay paper |
| Catalogue Number |
Size (mm) |
Qty / Pkg |
| Grade 557 |
| 10 320 390 |
95 x 135 |
1 booklet (250 leaves) |
| Grade 470 |
| 10 318 487 |
200 x 200 |
100 |
| 10 318 493 |
460 x 570 |
100 |
| 10 318 489 |
203 x 305** |
25 |
* corresponds 4 x 51/4 inches
** corresponds 8 x 12 inches
|
+32 (0) 16
58 90 45 
+32 (0) 16
50 90 45
