Semi-quantitative test strips QUANTOFIX Nitrite/pH
*taxes and shipping not included
Delivery time approx. 5 working days
The QUANTOFIX pH/Nitrite test strip enables quick and reliable determination of the pH value and nitrite content in water–based liquids. The easy handling makes the test strip particularly user–friendly: simply dip it into the sample, wait and read off the result – in 60 seconds! QUANTOFIX pH/Nitrite is therefore ideal for the analysis of water–based coolants. Regular monitoring of the cooling lubricant emulsion is not only a decisive prerequisite for its optimal use, but also important for the safety of the user. Low pH levels reduce the corrosion protection and stability of the emulsion. High pH and nitrite levels can pose a health risk to the operator.
Interested? Request your sample using our sample request form!
| Platform | Semi-quantitative test strips |
| Parameter | Nitrite, pH |
| Brand | QUANTOFIX |
| Gradation | Nitrite - 0 • 1 • 5 • 10 • 20 • 40 • 80 mg/L NO₂⁻, pH - 6.0 • 6.4 • 6.7 • 7. • 7.3 • 7.6 • 7.9 • 8.2 • 8.4 • 8.6 • 8.8 • 9.0 • 9.3 • 9.6 |
| Color change | Nitrite - white → red-violet, pH - yellow-orange → violet-red |
| Evaluable on reflectometer | No |
| Method | Nitrite - Griess reaction, pH - mixed indicator |
| Additional reagent | No |
| Storage temperature | 4–30 °C / 39–86 °F |
| Shelf life (from production) | 2.5 Year(s) |
| Scope of delivery | 100 test strips in a tube, instruction leaflet |
| Gross weight (incl. packaging) | 35 g / 0.08 lbs |
| Packaging dimensions | 43 x 123 x 40 mm / 1.69 x 4.84 x 1.57 Inch |
| Hazardous material | No |
MACHEREY-NAGEL delivers - reliability "made in Germany"
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Outstanding precision confirmed in study
pH-Fix 0-14 and QUANTOFIX Peroxide 100 test strips from MACHEREY-NAGEL are in no way inferior to the competitor's product (MQuant®* from Merck*), as comparative studies show. An accuracy of up to 96% underlines the reliability of results with pH-Fix 0-14 and QUANTOFIX Peroxide 100!**
* Merck and MQuant® are registered trademarks of Merck KGaA, which is in no way affiliated with MACHEREY-NAGEL GmbH & Co. KG.
** Please refer to our studies at
Visual or automated - one test strip for maximum flexibility
pH-Fix and QUANTOFIX can not only be evaluated visually with the color scale, but also conveniently measured with our QUANTOFIX Relax reflectometer - according to your schedule and needs. Automation prevents subjective color perception and allows quantitative analyses that are digitally documented.
Product overview
QUANTOFIX products
pH-Fix products
- dip - read - done
- precise determination of numerous parameters such as nitrate, peroxide, peracetic acid, ...
- quick and easy pH determination
- no bleeding thanks to patented technology
| REF | Product | Gradation |
|---|---|---|
| 92115 | pH-Fix 0.0-6.0 | pH 0 · 0.5 · 1.0 · 1.5 · 2.0 · 2.5 · 3.0 · 3.5 · 4.0 · 4.5 · 5.0 · 5.5 · 6.0 |
| 92180 | pH-Fix 0.3-2.3 | pH 0.3 · 0.7 · 1.0 · 1.3 · 1.6 · 1.9 · 2.3 |
| 92110 | pH-Fix 0-14 | pH 0 · 1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 · 9 · 10 · 11 · 12 · 13 · 14 |
| 92190 | pH-Fix 1.7-3.8 | pH 1.7 · 2.0 · 2.3 · 2.6 · 2.9 · 3.2 · 3.5 · 3.8 |
| 92118 | pH-Fix 2.0-9.0 | pH 2.0 · 2.5 · 3.0 · 3.5 · 4.0 · 4.5 · 5.0 · 5.5 · 6.0 · 6.5 · 7.0 · 7.5 · 8.0 · 8.5 · 9.0 |
| 92137 | pH-Fix 4.0-7.0 | pH 4.0 · 4.4 · 4.7 · 5.0 · 5.3 · 5.5 · 5.8 · 6.1 · 6.5 · 7.0 |
| 92120 | pH-Fix 4.5-10 | pH 4.5 · 5.0 · 5.5 · 6.0 · 6.5 · 7.0 · 7.5 · 8.0 · 8.5 · 9.0 · 9.5 · 10.0 |
| 92140 | pH-Fix 5.1-7.2 | pH 5.1 · 5.4 · 5.7 · 6.0 · 6.3 · 6.6 · 6.9 · 7.2 |
| 92122 | pH-Fix 6.0-10.0 | pH 6.0 · 6.4 · 6.7 · 7.0 · 7.3 · 7.6 · 7.9 · 8.2 · 8.4 · 8.6 · 8.8 · 9.1 · 9.5 · 10.0 |
| 92125 | pH-Fix 7.0-14.0 | pH 7.0 · 7.5 · 8.0 · 8.5 · 9.0 · 9.5 · 10.0 · 10.5 · 11.0 · 11.5 · 12.0 · 12.5 · 13.0 · 13.5 · 14.0 |
| REF | Product | Gradation |
|---|---|---|
| 91307 | QUANTOFIX Aluminum | 0 · 5 · 20 · 50 · 200 · 500 mg/L Al³⁺ |
| 91315 | QUANTOFIX Ammonium | 0 · 10 · 25 · 50 · 100 · 200 · 400 mg/L NH₄⁺ |
| 91334 | QUANTOFIX Arsenic 10 | 0 · 0.01 · 0.025 · 0.05 · 0.1 · 0.5 mg/L As³⁺ ⁵⁺ |
| 91332 | QUANTOFIX Arsenic 50 | 0 · 0.05 · 0.1 · 0.5 · 1.0 · 1.7 · 3.0 mg/L As³⁺ ⁵⁺ |
| 91345 | QUANTOFIX Arsenic Sensitive | 0 · 0,005 · 0.01 · 0.025 · 0.05 · 0.1 · 0,25 · 0.5 mg/L As³⁺ ⁵⁺ |
| 91314 | QUANTOFIX Ascorbic Acid | 0 · 50 · 100 · 200 · 300 · 500 · 700 · 1000 · 2000 mg/L Vitamin C |
| 91324 | QUANTOFIX Calcium | 0 · 10 · 25 · 50 · 100 mg/L Ca²⁺ |
| 91323 | QUANTOFIX Carbonate hardness | 0 · 3 · 6 · 10 · 15 · 20 °d |
| 91321 | QUANTOFIX Chloride | 0 · 500 · 1000 · 1500 · 2000 · ≥3000 mg/L Cl⁻ |
| 91317 | QUANTOFIX Chlorine | 0 · 1 · 3 · 10 · 30 · 100 mg/L Cl₂ |
| 91339 | QUANTOFIX Chlorine Sensitive | 0 · 0.1 · 0.5 · 1 · 3 · 10 mg/L Cl₂ |
| 91301 | QUANTOFIX Chromate | 0 · 3 · 10 · 30 · 100 mg/L CrO₄²⁻ |
| 91303 | QUANTOFIX Cobalt | 0 · 10 · 25 · 50 · 100 · 250 · 500 · 1000 mg/L Co²⁺ |
| 91304 | QUANTOFIX Copper | 0 · 10 · 30 · 100 · 300 mg/L Cu⁺ ²⁺ |
| 91318 | QUANTOFIX Cyanide | 0 · 1 · 3 · 10 · 30 mg/L CN⁻ |
| 91328 | QUANTOFIX Formaldehyde | 0 · 10 · 20 · 40 · 60 · 100 · 200 mg/L HCHO |
| 91365 | QUANTOFIX Free fatty acids | 0 · 0.25 · 0.5 · 1 · 2 · 3% FFA |
| 91348 | QUANTOFIX Glucose | 0 · 50 · 100 · 250 · 500 · 1000 · 2000 mg/L Glucose |
| 91325 | QUANTOFIX Molybdenum | 0 · 5 · 20 · 50 · 100 · 250 mg/L Mo⁶⁺ |
| 91305 | QUANTOFIX Nickel | 0 · 10 · 25 · 50 · 100 · 250 · 500 · 1000 mg/L Ni²⁺ |
| 91351 | QUANTOFIX Nitrate 100 | 0 · 5 · 10 · 25 · 50 · 75 · 100 mg/L NO₃⁻; 0 · 0.5 · 2 · 5 · 10 · 25 · 50 mg/L NO₂⁻ |
| 91366 | QUANTOFIX Nitrate 250 | 0 · 5 · 10 · 25 · 50 · 100 · 250 mg/L NO₃⁻ |
| 91313 | QUANTOFIX Nitrate/Nitrite | 0 · 10 · 25 · 50 · 100 · 250 · 500 mg/L NO₃⁻; 0 · 1 · 5 · 10 · 20 · 40 · 80 mg/L NO₂⁻ |
| 91311 | QUANTOFIX Nitrite | 0 · 1 · 5 · 10 · 20 · 40 · 80 mg/L NO₂⁻ |
| 91322 | QUANTOFIX Nitrite 3000 | 0 · 0.1 · 0.3 · 0.6 · 1 · 2 · 3 g/L NO₂⁻ |
| 91342 | QUANTOFIX Peracetic acid 2000 | 0 · 500 · 1000 · 1500 · 2000 mg/L Peracetic acid |
| 91340 | QUANTOFIX Peracetic acid 50 | 0 · 5 · 10 · 20 · 30 · 50 mg/L Peracetic acid |
| 91341 | QUANTOFIX Peracetic acid 500 | 0 · 50 · 100 · 200 · 300 · 400 · 500 mg/L Peracetic acid |
| 91312 | QUANTOFIX Peroxide 100 | 0 · 1 · 3 · 10 · 30 · 100 mg/L H₂O₂ |
| 91333 | QUANTOFIX Peroxide 1000 | 0 · 50 · 150 · 300 · 500 · 800 · 1000 mg/L H₂O₂ |
| 91319 | QUANTOFIX Peroxide 25 | 0 · 0.5 · 2 · 5 · 10 · 25 mg/L H₂O₂ |
| 91320 | QUANTOFIX Phosphate | 0 · 3 · 10 · 25 · 50 · 100 mg/L PO₄³⁻ |
| 91316 | QUANTOFIX Potassium | 0 · 200 · 400 · 700 · 1000 · 1500 mg/L K⁺ |
| 91337 | QUANTOFIX QUAT | 0 · 10 · 25 · 50 · 100 · 250 · 500 · 1000 mg/L Benzalconium chloride |
| 91329 | QUANTOFIX Sulfate | 400 · >800 · >1200 · >1600 mg/L SO₄²⁻ |
| 91306 | QUANTOFIX Sulfite | 0 · 10 · 25 · 50 · 100 · 250 · 500 · 1000 mg/L SO₃²⁻ |
| 91309 | QUANTOFIX Tin | 0 · 10 · 25 · 50 · 100 · 250 · 500 mg/L Sn²⁺ |
| 91330 | QUANTOFIX Total iron 1000 | 0 · 5 · 20 · 50 · 100 · 250 · 500 · 1000 mg/L Fe²⁺ ³⁺ |
| 91352 | QUANTOFIX Total sugar | 0 · 55 · 100 · 250 · 400 · 600 · 800 mg/L Fructose/Glucose |
| 91310 | QUANTOFIX Zinc | 0 · 2 · 5 · 10 · 25 · 50 · 100 mg/L Zn²⁺ |
- 50 years of experience in the production of test strips
- reliable in availability and precision
- dip - read - done: result in a few seconds
