1.1 本规程涵盖了使用Clarke Bumpus浮游生物采样器获取浮游动物群落定量样本的程序。 1.2 以国际单位制表示的数值应视为标准。本标准不包括其他计量单位。 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 这个 优势 Clarke Bumpus浮游生物采样器的结果如下: 5.1.1 它将根据采样设计对离散深度或多个深度进行采样。 5.1.2 它是一种慢速到中速采样器，需要三到五节的牵引速度。 5.1.3 样本量可以很容易地控制。 5.1.4 采样器重量轻，无需辅助设备即可使用。 5.1.5 它具有相对较高的过滤效率系数0.88。 5.1.6 它是一种多功能采样器，可以在除最浅的水域外的所有水域使用。 5.1.7 流量计记录流入网中的水量。 5.1.8 由于牵引速度过快，导致网口积水的后果很小。 5.2 这个 缺点 Clarke Bumpus浮游生物采样器的结果如下: 5.2.1 流量计需要频繁维护，包括校准和润滑。 5.2.2 它不适合在非常小的区域或浅水中使用。 5.3 有几个 特殊注意事项 应在使用Clarke Bumpus浮游生物采样器时进行观察。他们是: 5.3.1 流量计应经常校准和维修，以确保高效准确的操作。 5.3.2 采样器相对脆弱，尤其是关闭装置和流量计。这就需要谨慎的部署和恢复程序。 5.3.3 每次收集后，必须彻底清洗网。 5.3.4 必须特别注意电缆及其附件的强度，以避免取样器丢失。 5.3.5 采样器不应用于大型植物床、含有水下物体的水中或靠近底部。 5.3.6 应经常检查网是否有针孔、撕裂、网劣化和其他异常情况。 5.3.7 使用后，湿网应在柔和的光线下完全悬挂在空气中，并晾干。

1.1 This practice covers the procedures for obtaining quantitative samples of a zooplankton community by use of a Clarke-Bumpus plankton sampler. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 The advantages of the Clarke-Bumpus plankton sampler are as follows: 5.1.1 It will sample a discrete depth or multiple depths, depending upon the sampling design. 5.1.2 It is a slow to medium speed sampler requiring a towing speed of three to five knots. 5.1.3 The sample size can be easily controlled. 5.1.4 The sampler is lightweight and can be used without auxiliary equipment. 5.1.5 It has a relatively high filtration efficiency factor of 0.88. 5.1.6 It is a versatile sampler and can be used in all but the shallowest waters. 5.1.7 The flowmeter records the amount of water that passes into the net. 5.1.8 Overspill of water at the mouth of the net due to excess speed of towing is of minimal consequence. 5.2 The disadvantages of the Clarke-Bumpus plankton sampler are as follows: 5.2.1 The flowmeter requires frequent maintenance including calibration and lubrication. 5.2.2 It is not suitable for use in very small areas or shallow waters. 5.3 There are several special considerations that shall be observed when using a Clarke-Bumpus plankton sampler. They are: 5.3.1 The flowmeter should be calibrated and serviced frequently to ensure efficient and accurate operation. 5.3.2 The sampler is relatively fragile, particularly the closing device and flowmeter. This necessitates careful deployment and recovery procedures. 5.3.3 Following each collection, the net must be thoroughly washed. 5.3.4 Special attention must be given to the strength of the cable and its attachment to avoid loss of the sampler. 5.3.5 The sampler should not be used in beds of macrophytes, in waters containing submerged objects, or close to the bottom. 5.3.6 The net should be inspected frequently for pin-size holes, tears, net deterioration, and other anomalies. 5.3.7 Following use, the wet net should be suspended full length in the air in subdued light and allowed to dry.