pH Indicator Paper,pH test paper,pH paper
Suitable for educational and industrial use
Economical
| Indicator | Low pH color | Transition pH range | High pH color |
|---|
| Gentian violet (Methyl violet 10B) | yellow | 0.0–2.0 | blue-violet |
| Leucomalachite green (first transition) | yellow | 0.0–2.0 | green |
| Leucomalachite green (second transition) | green | 11.6–14 | colorless |
| Thymol blue (first transition) | red | 1.2–2.8 | yellow |
| Thymol blue (second transition) | yellow | 8.0–9.6 | blue |
| Methyl yellow | red | 2.9–4.0 | yellow |
| Bromophenol blue | yellow | 3.0–4.6 | purple |
| Congo red | blue-violet | 3.0–5.0 | red |
| Methyl orange | red | 3.1–4.4 | orange |
| Bromocresol green | yellow | 3.8–5.4 | blue |
| Methyl red | red | 4.4–6.2 | yellow |
| Methyl red | red | 4.5–5.2 | green |
| Azolitmin | red | 4.5–8.3 | blue |
| Bromocresol purple | yellow | 5.2–6.8 | purple |
| Bromothymol blue | yellow | 6.0–7.6 | blue |
| Phenol red | yellow | 6.8–8.4 | red |
| Neutral red | red | 6.8–8.0 | yellow |
| Naphtholphthalein | colorless to reddish | 7.3–8.7 | greenish to blue |
| Cresol Red | yellow | 7.2–8.8 | reddish-purple |
| Phenolphthalein | colorless | 8.3–10.0 | fuchsia |
| Thymolphthalein | colorless | 9.3–10.5 | blue |
| Alizarine Yellow R | yellow | 10.2–12.0 | red |
| Litmus | red | 4.5-8.3 | blue |
PH product list
| | PH Indicator PaperPH | reel indicator pater( wideth1.23m) | 100kg/roll |
| 10 | PH Indicator Paper 1-14 | Universal Indicator Paper | 1000book/case |
| 11 | PH Indicator Paper 1-14 | Universal Indicator Paper | 100 strips/box |
| 12 | PH Indicator Paper 1-14 | Universal Indicator Paper | 1000 rolls/case |
| 13 | PH Indicator Paper 1-14 | Universal Indicator Paper | 100 strips/bottle |
| 14 | PH Indicator Paper 0-14 | Universal Indicator Paper | 1000 rolls/case |
| 15 | PH Indicator Paper 4.0-9.0 | Special Indicator Paper | 100 strips/box |
| 16 | PH Indicator Paper 4.0-10.0 | 4.0-4.5-5.0-5.5...8.5-9.0-9.5-10.0 | 50 strips/bottle |
| 17 | PH Indicator Paper 4.5-9.0 | 4.5-5.0-5.5-6.0-6.5-7.0-7.5-8.0-8.5-9.0 | 100 strips/box |
| 18 | PH Indicator Paper 5.5-9.0 | Special Indicator Paper | 100 strips/box |
| 19 | PH Indicator Paper 5.5-9.0 | Special Indicator Paper | 1000book/case |
| 20 | PH Indicator Paper 5.5-9.0 | Special Indicator Paper | 100 strips/box |
| 21 | PH Indicator Paper 5.5-9.0 | Special Indicator Paper | 1000 rolls/case |
| 22 | PH Indicator Paper 7.5-9.5 | 7.5-7.9-8.2-8.4-8.6-8.8-9.1-9.5 | 100 strips/box |
| 23 | PH Indicator Paper 7.5-9.5 | 7.5-7.9-8.2-8.4-8.6-8.8-9.1-9.5 | 50 strips/bottle |
| 24 | Special Indicator Paper | PH 3.8-5.4 | 80 sheet/box |
| 25 | Special Indicator Paper | PH 5.5-9.0 | 80 sheet/box |
| 26 | Special Indicator Paper | PH 6.4-8.0 | 80 sheet/box |
| 27 | Phenolphthalein paper | | 80 sheet/box |
| 28 | Litmus Neutral Paper | 5.0-8.0 | 80 sheet/box |
| 29 | Litmus Red Paper | 5.0-8.0 | 80 sheet/box |
| 30 | Litmus Blue Paper | | 80 sheet/box |
| 31 | Congo Red paper | 3.0-5.0 | 80 sheet/box |
| 32 | Potassium iodide starch paper | | 80 sheet/box |
| 33 | Saliva and Urine Indicator paper 5.5-8.0 | 5.5-5.8-6.0-6.2-6.4...7.6-7.8-8.8 | 5m/roll |
| 34 | Saliva and Urine Indicator paper 5.5-8.0 | 5.5-5.8-6.0-6.2-6.4...7.6-7.8-8.8 | 100 strips/box |
In triplicate color paper pad.
Place 2-3 drops of aspirate onto the test zones,within 10 to 60 seconds,read the corresponding pH.
or 4.5-9.0,ISO13485&CE.urine test glucose,protein,blood,ketone,pH...hospital,lab,home,clinic
color chart of pH
double color pH 4.5-9.0 test strip,dry chemical pH tests
urine or saliva pH tests,swimming pool pH tests,pond pH tests,acidic or alkaline liquid pH tests,laboratory pH tests,soil pH tests.planting water pH tests,drinking water pH.visual read. special pH test strips(4.5-9.0),0.25 increment
human or animal use pH test strips.
Once you have determined if a substance is an acid or a base, you need to determine how strong (or concentrated) it is. The simplest measure of the strength of an acid or base is the concentration of H+ ion in the solution. The fastest way to determine pH is to use pH paper. It uses a broad range indicator to turns a series of colors from pH 1 to 14. The color change is then compared with a color chart to determine the pH. A high pH indicates a base, and a low pH indicates an acid. A pH near 7 indicates a neutral substance. Peoples should be aware that shampoos and soaps and most skin products are pH balanced near 7, to protect skin, hair and eyes..
