Various kinds of temperature and humidity instruments are used. When selecting, consider the user's actual application environment and requirements, such as range, output and display, installation methods, sampling methods, gas types, materials and structures, control and monitoring requirements, and environmental hazards. In addition, factors such as cost-effectiveness and maintenance workload should also be considered: 1. Cost-effective: When using the temperature and humidity meter, you can't just consider the price is low, you should choose the price and performance. This includes price, life, maintenance, and calibration costs.
2. Rugged: Wear-resistant tester type hygrometer sensors and housings are to be considered for their ability to withstand condensation, drying, extreme temperatures, dust, chemicals, or other contamination.
3. Verification: The verification method and whether it is easy to consider, even if you do not need high-precision results. It will save you the workload of checking a convenient instrument on site and in situ.
4. Quality Reliability, Average Lifetime: When the quality is not good, you can start from the overall impression, examine the quality appraisal and factory standards, and examine the history, reputation, market share and application of the manufacturer. The brand-name products are better than the general products. Manufacturers' products are better than manufacturers, and consulting other users is also a good method.
5. Adaptability: When the use situation is not a single one, consider the adaptability of the instrument.
6. Replaceability: Hygrometers are generally expected to be used interchangeably or with other probes to fit your host.
7. Maintenance: Check the time required for regular cleaning, renewal, and replacement of hygrometers.
8. Standby: Spare parts are indispensable for most users, and it is inspected whether suppliers can provide spare parts as soon as possible.
9. After-sales service: Whether there is a guarantee, maintenance and service agreement.
Chromium(III) sulfate usually refers to the inorganic compounds with the formula Cr2(SO4)3.x(H2O), where x can range from 0 to 18. Additionally, ill-defined but commercially important "basic chromium sulfates" are known. These salts are usually either violet or green solids that are soluble in water. It is commonly used in tanning leather.
Since 33% of the anion charges are due to hydroxy ions the basicity is 33% (but in tanning jargon it is known as 33% reduced). Products with higher basicities, e.g. 42% or 50% may be obtained by the addition of sodium carbonate, these are often used in combination with Sodium Formate. The sodium sulfate is often left in the technical product since it is inert with respect to the tanning process. It is important to fully reduce the hexavalent chromium to trivalent since the hexavalent is more likely to cause health problems for tanners and leather consumers.
Basic Chrome Sulphate,Basic Chrome Sulfate for Tannery,Tanning Agent Basic Chrome Sulfate
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