... 1000, grade 10,000, grade 100,000, and grade 300,000(9) Counting mode automatic, manual ... and first preheat for 1-2 minutes.(2) When measurement is over, don’t turn off the machine immediately, insert one end ... of the self-purification tube in the self-purification device, and insert the other end in ... purification tube from the self-purification tube port, and screw on the cap. (3) When ...