TRO 药剂
scientific A watts brand
XT/EX
power DPD Power
liquid indicator
liquid buffer
chlorine monitor total chorine indictator
total chlorine buffer solution

total residual oxidant buffer for TRO meter
Headway oceanguard ballast water managemet system
monitoring unit
1、缓冲剂 buffer
2、指示剂，indicator
3、比色cu

bcklight on RPM Indicator JIS F 8521
(Propeller Shaft Revolution Indicator
Model:SL-200EL; Voltage 10V / 1 mA; IP-56;
Illumination Source- AC 100 V; weight – 6kg
DIA of the Backlight – 200 mm