ຮັບສ່ວນຫຼຸດພິເສດຕາມປະລິມານ, ອັບເດດລາຄາຂາຍສົ່ງ ແລະ ການແຈ້ງເຕືອນສິນຄ້າໃໝ່ສົ່ງກົງເຖິງອິນບັອກຂອງທ່ານ.
ໂດຍການສະໝັກສະມາຊິກ, ທ່ານຍອມຮັບ ເງື່ອນໄຂການໃຫ້ບໍລິການ ແລະ ນະໂຍບາຍຄວາມເປັນສ່ວນຕົວ ຂອງພວກເຮົາ.
ເຂົ້າເຖິງຜູ້ຊ່ຽວຊານທີ່ໄດ້ຮັບການຢັ້ງຢືນຂອງພວກເຮົາໂດຍກົງ
Indicator: 0.05 ~ 0.8%
Measuring Range:
+ 0.05 ~ 0.8%, Number of Pump Strokes 2
+ 0.8 ~ 2.0%, Number of Pump Strokes 1
Sampling Time: 1.5 minutes per pump stroke
Colour Change: Orange → Dark green
Reaction Principle: CH3COCH3 + Cr6++ H2SO4→Cr3+
Coefficient of Variation: 10% (for 0.05 to 0.2 %), 5% (for 0.2 to 0.8 %)
Nr. of tests: 10
Pump: GV-100S/110S
| Measuring Range |
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| Number of Pump Strokes |
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| Correction Factor |
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| Sampling Time | 1.5 minutes per pump stroke | ||
| Detecting Limit | 0.003% (n=2) | ||
| Colour Change | Orange → Dark green | ||
| Reaction Principle | CH3COCH3 + Cr6++ H2SO4→Cr3+ | ||
| Coefficient of Variation | 10% (for 0.05 to 0.2 %), 5% (for 0.2 to 0.8 %) | ||
| Shelf Life | 3 Years | ||
| Corrections for temperature & humidity | Temperature correction is necessary | ||
| Store the tubes at cool and dark place. | |||
| Substance | Concentration | Interference | Change colour by itself to |
| sulphur dioxide |  500 ppm |
+ | Green(500 ppm) |
| Hydrogen sulphide | 500 ppm |
+ | Dark green(500 ppm) |
| Alcohols, Esters, Ketones | + | Dark green | |
| Propane | 0.2% |
Yes | Dark green (whole layer)(0.2%) |
| Aromatic HCs. | 500 ppm |
+ | Dark green(500 ppm) |
| Substance | Correction Factor | No. of pump strokes | Measuring Range |
| Cyclohexene | 1.0 | 1 | 0.05 to 0.8% |
| Calibration gas generation | Static gas dilution method |
| TLV-TWA | TLV-STEL | Explosive range |
| 500 ppm (2014) | 750 ppm (2014) | 2.1 to 13% |
