ม้วนกระดาษทดสอบค่าความเป็นกรด-ด่างของน้ำ (pH paper)
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| pH indicator paper |
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| DUOTEST |
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| TRITEST |
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| pH indicator paper |
| Standards for many applications |
pH indicator papers have been on the market for decades and are the standard for many applications. For each pH-value these papers show a single color which can be matched with the color scale at intervals of 0.2 –1 pH.The characteristic features of pH indicator papers are:
pH indicators are supplied in plastic reels that ensure long term stability and protection against many external influences. The indicator paper will always be ready-to-use when needed.pH indicators are manufactured from high quality filter papers from MACHEREY-NAGEL. Combined with our ISO 9001 quality control scheme this ensures optimal quality. The user will always get reliable readings. The colors of the color scales are specially mixed to perfectly match the reaction color of the indicator papers. This makes the read-off of results easy and accurate. |
| pH indicator paper at a glance |
| indicator paper |
pH gradation |
REF |
| pH 1 – 11 |
1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 · 9 · 10 · 11 |
90201 |
| pH 1 – 14 |
1 · 2 · 3 · 5 · 6 · 7 · 8 · 9 · 10 · 12 · 14 |
90204 |
| pH 0.5 – 5.5 |
0.5 · 1.0 · 1.5 · 2.0 · 2.5 · 3.0 · 3.5 · 4.0 · 4.5 · 5.0 · 5.5 |
90205 |
| pH 3.8 – 5.8 |
<3.8 · 3.8 · 4.1 · 4.3 · 4.5 · 4.7 · 4.9 · 5.2 · 5.5 · 5.8 · >5.8 |
90206 |
| pH 4.0 – 7.0 |
4.0 · 4.3 · 4.6 · 4.9 · 5.2 · 5.5 · 5.8 · 6.1 · 6.4 · 6.7 · 7.0 |
90207 |
| pH 5.4 – 7.0 |
<5.4 · 5.4 · 5.7 · 6.0 · 6.2 · 6.4 · 6.7 · 7.0 · >7.0 |
90208 |
| pH 5.5 – 9.0 |
5.5 · 6.0 · 6.5 · 7.0 · 7.5 · 8.0 · 8.5 · 9.0 |
90209 |
| pH 6.4 – 8.0 |
<6.4 · 6.4 · 6.6 · 6.8 · 7.0 · 7.2 · 7.4 · 7.6 · 7.8 · 8.0 · >8.0 |
90210 |
| pH 7.2 – 9.7 |
<7.2 · 7.2 · 7.5 · 7.8 · 8.1 · 8.4 · 8.7 · 9.0 · 9.3 · 9.7 · >9.7 |
90211 |
| pH 8.0 – 10.0 |
8.0 · 8.2 · 8.4 · 8.7 · 9.0 · 9.2 · 9.6 · 10.0 |
90212 |
| pH 9.0 – 13.0 |
9.0 · 9.5 · 10.0 · 10.5 · 11.0 · 11.5 · 12.0 · 12.5 · 13.0 |
90213 |
| pH 12.0 -14.0 |
12.0 · 12.5 · 13.0 · 13.5 · 14.0 |
90214 |
DUOTESTdouble zone pH-papers |
| DUOTEST papers are indicator papers with greater accuracy and increased ease of reading. Two complementary indicator zones on one strip – separated by a white centre band – guarantee clear color differentiation and a more accurate estimate of intermediate values. The white centre band is hydrophobic and prevents those colors of the two indicator zones run into one another. thus increasing accuracy. |
| DUOTEST at a glance |
| DUOTEST range |
pH gradation |
REF |
| pH 1 – 12 |
1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 · 9 · 10 · 11 · 12 |
90301 |
| pH 1.0 – 4.3 |
1.0 · 1.3 · 1.6 · 1.9 · 2.2 · 2.5 · 2.8 · 3.1 · 3.4 · 3.7 · 4.0 · 4.3 |
90302 |
| pH 3.5 – 6.8 |
3.5 · 3.8 · 4.1 · 4.4 · 4.7 · 5.0 · 5.3 · 5.6 · 5.9 · 6.2 · 6.5 · 6.8 |
90303 |
| pH 5.0 – 8.0 |
5,0 · 5,3 · 5,6 · 5,9 · 6,2 · 6,5 · 6,8 · 7,1 · 7,4 · 7,7 · 8,0 |
90304 |
| pH 7.0 – 10.0 |
7.0 · 7.3 · 7.6 · 7.9 · 8.2 · 8.5 · 8.8 · 9.1 · 9.4 · 9.7 · 10.0 |
90305 |
| pH 9.5 – 14.0 |
9.5 · 10.0 · 10.5 · 11.0 · 11.5 · 12.0 · 12.5 · 13.0 · 13.5 · 14.0 |
90306 |
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TRITESTtriple zone pH-papersFor most precise reading these papers show three different colors for each full pH unit. TRITEST L is specially equipped with a hydrophobic barrier between the different indicators. As the different colors will not mix this ensures optimal usability. |
| TRITEST at a glance |
| TRITEST range |
pH gradation |
REF |
| TRITEST pH 1 – 11 |
1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 · 9 · 10 · 11 |
90501 |
| TRITEST L pH 1 – 11 |
1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 · 9 · 10 · 11 |
90510 |
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