坦桑尼亚采购需求：DO计，溶解氧仪，在线溶解氧仪，便携式溶解氧仪，光学溶解氧仪，溶解氧分析仪

I'm looking for information on BOD/COD analyzer machines. Specifically, I need details on availability, technical specifications, and pricing options. We're interested in models suitable for wastewater treatment applications with a focus on accuracy and reliability. Additionally, please provide insights into the lead time for delivery, warranty conditions, and any available support or service packages post-purchase. If you have any brochures or product catalogs, I would appreciate receiving them to better understand what options are available. Thank you!