Macherey-Nagel, 91329, Quantofix Sulfate, Box Of 100 Strips
Macherey-Nagel, 91329, Quantofix Sulfate, Box Of 100 Strips
Test sticks for the semi-quantitative determination of sulphate in solutionsGradation of scale: 0 >400 >800û>1200 >1600 mg/l SO 4 2û red to yellowQUANTOFIX « sulphate uses the same general principle as the AQUADUR « test sticks.Between pH 4 and 8 the reaction is independent of the pH value of the test solution. Strongly acidic samples have to be adjusted with sodium acetate, alkaline solutions are adjusted using tartaric acid.The following ions only interfere above the indicated concentrations:> 1000 mg/l BrO 3 û , ClO 3 û , CrO 4 2û , SO 3 2û , S 2 O 5 2û , SeO 3 2û > 500 mg/l S 2 O 4 2û , > 100 mg/l CN û , S 2û
- ASIN: B00S1UL4KQ
- Brand: Macherey-Nagel
- Manufacturer: Macherey-Nagel
SEOH pH-Fix 2.0-9.0 Analytical Test Strips Box 100
SEOH pH-Fix 2.0-9.0 Analytical Test Strips Box 100
The patented pH-Fix technology stands for a high quality, color-fixed pH test strip system. For many years chemists as well as inexperienced users have appreciated pH-Fix's optimal usability, reliability, and precision. The long handle prevents fingers from coming into contact with the sample. It adds handling convenience and increases safety of operation. This allows a high standard of "workplace safety" when testing aggressive solutions. To prevent bleeding, the pH-indicator is chemically bound to the cellulose fiber. Unlike classic pH papers, pH-Fix effectively protects the sample against contamination and enables measurements even in weakly buffered or strongly alkaline solutions. Four different color blocks for each pH-value (pH-Fix 0-14) ensure highly precise pH-determination and make the application rapid and reliable.
- ASIN: B0089NGRA2
- Brand: SEOH
- Manufacturer: Scientific Equipment of Houston
Sulfite Test Analytical Strips Vial 10-500 PPM
Sulfite Test Analytical Strips Vial 10-500 PPM
The Free Sulfite Test Strip is used to detect sulfite ions in water-based solutions, measuring in increments of 10, 50, 100, 250, and 500 ppm. Various types of sulfites can be tested with this strip: sulfite, bisulfite, and metabisulfite. When testing foods for sulfite content, such as wine, it is important to realize that the sulfite present can be either free or "bound." The strip detects free sulfite only, the pH needs to be adjusted to 12 to get an accurate reading for total sulfites (free plus combined). Please contact us before buying if you intend to use it for testing red wine or something for total sulfites so we can provide you more information. Instructions: Immerse the test strip into the solution and swirl 3 times. Remove the strip and compare to the color chart after 15 seconds.
- UPC: 649910801095
- ASIN: B079LV9KSV
- Brand: Bartovation
- Manufacturer: Bartovation
Ascorbic Acid Vitamin C Food Test Strip (Pack of 50)
Ascorbic Acid Vitamin C Food Test Strip (Pack of 50)
The Ascorbic Acid Test Strip is used to detect Ascorbic Acid, or Vitamin C in graduations of 0, 0.01, 0.02, 0.05, & 0.1%. The Ascorbic Acid test strip is based on discoloration of blue red-ox indicator, depending on the concentration of ascorbic acid. Red-ox indicator is also sensitive to acidic compounds, and its blue color turns to purple in the presence of acids. The Vitamin C strips are buffered to a certain extent to keep the blue color of the pad, but in the presence of strong acids, contained in some fruits or juices, the color can turn to a purple-pink instead of a blue-white. In such cases, we recommend using a special color chart (last picture on the listing) which shows results for Vitamin C in the presence of different concentrations of citric acid. Lemons and limes contain the highest amount of citric acid at about 5 percent. Grapefruits and oranges also have high content of citric acid at about 2.5 and 2 percent, respectively. Instructions: Remove one Ascorbic Acid test strip from the vial and close cap. Dip the strip into the solution to be tested for 2 seconds. Remove the strip and compare to the color chart after 30 seconds.
- UPC: 649910801231
- ASIN: B07G7HCYX9
- Brand: Bartovation
- Manufacturer: Bartovation
SEOH pH PEHANON 3.8-5.5 Analytical Test Strips Box 200
SEOH pH PEHANON 3.8-5.5 Analytical Test Strips Box 200
PEHANON is a special pH-test strips that unifies the pH-indicator and the reference colors on one strip. Any sample color has the same effect on both, the reference colors and the reactive pad. This ensures unadulterated readings in colored solutions. The user can be sure to get accurate pH-values. pH-values can be determined without a separate color chart. Workers and machinists can use single strips instead of complete packs with color chart, which makes PEHANON highly economic. An invisible hydrophobic barrier just above the top color field prevents capillary action of the test solution beyond. The handle will remain dry and clean whatever the sample is. Therefore the use of the strip is very safe.
- ASIN: B0089NQ8RO
- Brand: SEOH
- Manufacturer: Scientific Equipment of Houston
SEOH pH Analytical Test Paper 5 Meter Roll Dispenser 12.0-14.0
SEOH pH Analytical Test Paper 5 Meter Roll Dispenser 12.0-14.0
For each pH-value these papers show a single color which can be matched with the color scale at intervals of pH 0.2-1. 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.
- ASIN: B0089NZHSA
- Brand: SEOH
- Manufacturer: Scientific Equipment of Houston
SEOH 5 Meter Roll Dispenser of pH Analytical Test Paper (pH 3.8-5.8)
SEOH 5 Meter Roll Dispenser of pH Analytical Test Paper (pH 3.8-5.8)
For each pH-value these papers show a single color which can be matched with the color scale at intervals of pH 0.2-1. 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.
- ASIN: B0089NZHE4
- Brand: SEOH
- Manufacturer: Scientific Equipment of Houston
SEOH Indicator to Detect Chlorine Sensitive Quantofix 100 Analytical Strips
SEOH Indicator to Detect Chlorine Sensitive Quantofix 100 Analytical Strips
QUANTOFIX test strips are semi-quantitative in nature. They meet all requirements for a modern rapid test. Most of the QUANTOFIX test strips can be carried out in 10-120 seconds. That makes the application very quick for the end user. All QUANTOFIX tests are ready to use kits. They are precalibrated and contain all necessary equipment and reagents. As "labs in a pocket" they are very handy for the end user. The color charts are adjusted and checked using certified standard solutions that are directly traceable to primary NIST standards. The user can be sure to receive accurate readings whenever he tests. Make sure to store the packs in a dry, cool place at 39-86 °F (4-30 °C). Some tests are separately marked to require cool storage at 39-46 °F (4-8 °C). To ensure the longevity of the test strips, please close the tube immediately after removing a strip. The desiccant in the stopper effectively protects the strips against moisture. The strips can safely be used up to the date printed on the pack. The initial shelf life of the QUANTOFIX products is 2.5 years after production.
- ASIN: B0089PLTOO
- Brand: SEOH
- Manufacturer: Scientific Equipment of Houston
Macherey-Nagel, 91306, Quantofix Sulfite, Box Of 100 Strips
Macherey-Nagel, 91306, Quantofix Sulfite, Box Of 100 Strips
For semi-quantitative determinations Gradation: 0 to 1000mg/L. Color changes from white to salmon.
- ASIN: B00S1UKLOG
- Brand: Macherey-Nagel
- Manufacturer: Macherey-Nagel
SEOH Brilliant Yellow Indicator Paper Box of 100 6.7-7.9
SEOH Brilliant Yellow Indicator Paper Box of 100 6.7-7.9
These products are simple, completely impregnated indicator papers. They indicate if the pH of solution is above or below the point of color change. They are useful to distinguish between acids and bases.
- ASIN: B0089PLWPA
- Brand: SEOH
- Manufacturer: Scientific Equipment of Houston