Sampling device

The utility model relates to a sampling device which is characterized in that a matched push rod (2) is arranged in a sleeve (3), a rubber plug (4) for sealing is arranged at the tail end of the push rod (2), a suction nozzle (5) is arranged at the tail end of the sleeve (3), a filter screen (6) is sleeved on the suction nozzle (5), and the filter screen (6) is fixed by a rubber ring (7). The pH test paper is simple in structural design and convenient to use, the influence of calcium hydroxide and ferrous hydroxide in the wastewater on the reading of the pH test paper is reduced, and the accuracy of measuring the pH value of a wastewater solution is improved. 本实用新型涉及一种取样装置，其特征在于：套管(3)内设有相匹配的推杆(2)，推杆(2)的末端设有用于密封的胶塞(4),套管(3)末端头设有吸嘴(5)，吸嘴(5)上套有滤网(6)，滤网(6)用橡胶圈(7)固定。结构设计简单，使用方便，减少了废水中氢氧化钙和氢氧化亚铁对PH试纸读数的影响，提高废水溶液PH值测定的准确性。