印度采购需求：物理仪器、清洁设备、蒸汽灭菌器、电子天平

I'm looking for a benchtop multiparameter water quality meter that provides a range of functionalities for testing various water quality parameters. It should be user-friendly, with intuitive controls and a clear display for easy operation. Additionally, I'd like to know more about its accuracy and response time across different parameters like pH, turbidity, conductivity, and dissolved oxygen. Could you please provide details on the specifications, available features, and pricing? I'm also interested in any options for calibration and maintenance support you may offer. If there are multiple versions or package options available, information on those would also be appreciated. Thanks!