... /TDS Meter, Incubator, shaker, Hotplate, Mixer, PCR, Oven, etc.Desktop Whiteness TesterApplication:This instrument based on the principle of photoelectric ... 2)Wavelength Accurancy: 0.01;3)Delivery Time:Within 10 days after received the payment;4)Shipment:by air,air ... .01Calibrate18Zero Draft≤±0.1Stability0.2/10minRepeatability≤±0.2Power Supply220V+/-10%Measuring Condition0/dd/0 Desktop Whiteness Tester