| Indicator papers without colour scale |
| For orientation and adjustment of pH values These products are simple, completely impregnated indicator papers, which do not allow exact pH determinations, but pH adjustments during special chemical procedures. For this reason, no colour scale is provided with these papers. |
Brilliant yellow paper (Yellow to Red
Quick and easy determination of alkali concentration
Yellow paper, which changes colour to red near neutral (pH 6.7 – 7.9).
Recommended application:
demonstration of a specific alkali concentration, which is required for special reactions
| Product data and ordering information | |
| Type | pH indicator papers |
| Presentation | Box of 200 test strips, 10 x 70 mm |
| Color reaction | yellow red |
| pH range | 6.7 – 7.9 |
| REF | 90701 |
Congo paper MN 260 HE (Red to Blue)
Quick and easy determination of lactic acid
Red paper, which changes colour to blue in the pH range 3.0 – 5.0.
Congo paper is supplied in three versions of varying sensitivity:
Congo paper MN 816 N – normal sensitivity
Congo paper MN 260 HE – high sensitivity
Congo paper MN 616 T – medium sensitivity,
Recommended application:
Neutralisation analysis; detection of lactic acid in culture media, which contain lactic acid-producing strains of B. coli.
| Product data and ordering information | |
| Type | pH indicator papers |
| Presentation | Box of 200 test strips, 20 x 70 mm |
| Color reaction | red blue |
| pH range | 5.0 – 3.0 |
| REF | 90705 |
Congo paper MN 816 N (Red to Blue)
Quick and easy determination of lactic acid
Red paper, which changes colour to blue in the pH range 3.0 – 5.0.
Congo paper is supplied in three versions of varying sensitivity:
Congo paper MN 816 N – normal sensitivity
Congo paper MN 260 HE – high sensitivity
Congo paper MN 616 T – medium sensitivity
Recommended application:
Neutralisation analysis; detection of lactic acid in culture media, which contain lactic acid-producing strains of B. coli.
| Product data and ordering information | |
| Type | pH indicator paper |
| Presentation | Reel of 5 m length and 7 mm width |
| Color reaction | red blue |
| pH range | 5.0 – 3.0 |
| REF | 90702 |
Litmus paper blue (Blue to Red)
Quick and easy determination of acidic and alkaline reaction
Changes colour from blue to red when conditions change from alkaline to acidic.
Recommended application:
General test for acidic or alkaline reaction: It serves in neutralisation reactions to check whether the change from acid to alkaline or vice versa has taken place. Litmus paper is the bestknown indicator paper.
Chemistry:
Litmus is not a single, chemically defined substance but a natural product containing a mixture of substances. It is extracted from lichen and probably represents the oldest known indicator dye.
| Product data and ordering information | |
| Type | pH indicator paper |
| Presentation | 91106 : Reel of 5 m length and 7 mm width 91126 : Booklet of 100 strips, 10 x 70 mm |
| Color reaction | blue red |
| pH range | 8.0 – 5.0 |
| REF | 91106 91126 |
Litmus paper neutral (Violet to Red, Violet to Blue)
Quick and easy determination of acidic and alkaline reaction
Litmus paper neutral:
violet indicator paper which changes to red under acid conditions and to blue under alkaline conditions.
Recommended application:
General test for acidic or alkaline reaction: It serves in neutralisation reactions to check whether the change from acid to alkaline or vice versa has taken place. Litmus paper is the bestknown indicator paper.
Chemistry:
Litmus is not a single, chemically defined substance but a natural product containing a mixture of substances. It is extracted from lichen and probably represents the oldest known indicator dye.
| Product data and ordering information | |
| Type | pH indicator papers |
| Presentation | 91107 : Reel of 5 m length and 7 mm width 91127 : Booklet of 100 strips, 10 x 70 mm |
| Color reaction | red violet blue |
| pH range | 5,0 – 8,0 |
| REF | 91107 91127 |
Litmus paper red (Red to Blue)
Quick and easy determination of acidic and alkaline reaction
Litmus paper red:
changes colour from red to blue when conditions change from acidic to alkaline.
Recommended application:
General test for acidic or alkaline reaction: It serves in neutralisation reactions to check whether the change from acid to alkaline or vice versa has taken place. Litmus paper is the bestknown indicator paper.
Chemistry:
Litmus is not a single, chemically defined substance but a natural product containing a mixture of substances. It is extracted from lichen and probably represents the oldest known indicator dye.
| Product data and ordering information | |
| Type | pH indicator papers |
| Presentation | 91108 : Reel of 5 m length and 7 mm width 91128 : Booklet of 100 strips, 10 x 70 mm |
| Color reaction | red blue |
| pH range | 5,0 – 8,0 |
| REF | 91108 91128 |
Nitrazine yellow paper (Yellow to Violet-Blue)
Quick and easy determination for neutralisation analyses
Yellow paper which changes to blue when the pH exceeds 6 towards alkaline conditions (greyish blue at pH 7; blue at pH > 8).
Recommended application:
neutralisation analyses
| Product data and ordering information | |
| Type | pH indicator papers |
| Presentation | Box of 200 test sticks, 20 x 70 mm |
| Color reaction | yellow violet-blue |
| pH range | 6.0 – 7.0 |
| REF | 90711 |
Phenolphthalein paper (White to Red)
Quick and easy determination for neutralisation analyses
White paper, which changes colour to red when the pH exceeds 8.3 towards alkaline conditions (red at pH > 10).
Recommended application:
neutralisation analyses
| Product data and ordering information | |
| Type | pH indicator papers |
| Presentation | Reel of 5 m length and 7 mm width |
| Color reaction | white red |
| pH range | 8.3 – 10.0 |
| REF | 90712 |
ไฟล์ที่เกี่ยวข้องกับผลิตภัณฑ์
