Notice: Micro oxygen analyzer (with built-in pump) will cancel the built-in dust filter from this day

通告：微量氧分析仪（带内置泵）自本日起取消内置灰尘过滤器
　　After a long time of testing the sales data for nearly 8 months and the real-time feedback of users" use, combined with the results and analysis of the feedback, our company decided to cancel the built-in dust filter for products sold after May 1, 2021. The product models involved are as follows: ZO-100, ZO-201, ZO-202, ZO-203, ZO-204, LN-ZO-201, RA-300, RC-450, etc. The main reasons for cancellation are: 1. If the built-in dust filter is added, the air nozzle of the dust filter may be broken, resulting in air leakage and affecting the measurement accuracy 2. After adding the built-in dust filter, due to the large volume of the filter, the measurement response is long, which has a great impact on users who need to measure quickly 3. The filter itself has the risk of leakage 4. The filter can only filter large particles of dust and has no effect on corrosive gases in the atmosphere 5. The filter has no effect on sulfur powder 6. The filter can absorb oil and gas to a certain extent, but its function is very limited, which cannot fundamentally solve the problem of oil and gas entering the sensor To sum up, we hereby inform you that our company has decided to cancel the built-in dust filter for products sold after May 1, 2021!