一、Overview
 This product is mainly used to determine the filtration loss of drilling fluid and to prepare filter cakes after filtration loss. It is manufactured with API standards, with reasonable structure, convenient use, accurate testing, strong and durable. It is widely used in major oil fields, geological exploration and laboratory drilling fluid analysis and determination.

二、Model and specification
1. ZNS-1:medium pressure (pumper) filter 20ml measuring cylinder, filter paper, sealing ring 
2. ZNS-2:medium pressure (stainless steel cup) filter 20ml measuring cylinder, filter paper, sealing ring 
3. SD-3:triple medium pressure filter loss meter 20ml measuring cylinder, filter paper, sealing ring 
4. SD-4:quadrant medium pressure filter loss instrument 20ml measuring cylinder, filter paper, sealing ring 
5. SD-6:six-fold medium pressure filter loss meter 20ml measuring cylinder, filter paper, sealing ring

三、Main technical parameters
1. Effective filter loss area                                                           45.6±0.6cm² 
2. Working pressure                                                                       0.69MPa 
3. Drilling liquid cup injection                                                 240ml/single cup 
4. Drilling liquid cup limit pressure                                                 1MPa