生态供应

防水型风速计，用于测定风速。根据大气温度和风速指示风寒温度。显示平均速度和最大速度。蒲福风级上的风曲线。配备有可关闭的盖子。 风速：0,2 … 30 m/s 精确度：平均风速的±5% 单位：km/h，m/h，m/s 或knots（节） 温度：-30°至+59°C 电池：3.0 V（CR2032） 规格尺寸：137x50x18 mm³ 更多

Insertion Thermometer F Waterproof digital thermometer with a 125 mm long sensor to measure the temperature of liquid, pulverulent and soft substances. With memory function, min/max function, reversible °C/°F. Plastic casing, clip and LR 44 ... 更多

格外牢固的经过强化加固筛网。 这一抄网即使在其边缘，网筛都是经过加固的，因此您能够直接从地上捕获小动物。因为其牢固简单的结构，避免了可能出现的弯折。直径：200 mm。 本产品未包含伸缩杆。如有需求，请另行订购。产品编号为W11703。 更多

为了证明水中或者土壤中的油，或者为了证明燃油（柴油）和机油中的烃类而使用。即使水自身具有颜色，即使其中含有很少的油，试纸上也将呈现深蓝色。1包100 张试纸，规格为20 x 70 mm。有英文和德文说明。 更多

The Telescopic Pond Net is ideal for education and anyone who needs a well constructed good quality pond net. The net head is 240mm wide and the strong, durable net bag is 30cm deep and made from standard (2mm) woven mesh. It has an orange ... 更多

The educational plankton net has an opening diameter of 150mm and mesh size of 53 µm. It is ideal for educational use or for those who require an economical net for trial sampling. The net has an industrial nylon collar which is fitted onto ... 更多

A very sturdy but lightweight hand net for routine aquatic sampling, field centre use and river sampling. The frame includes an inner brass ring and fixings to which the net is attached. Specification: Length: 1.48m Net head ... 更多

This tube is manufactured from stainless steel and provides an efficient method of extracting a 2.9 cm diameter core from the surface soil. The tube has a cutaway section from which the core can be easily removed and the handle is comfortable ... 更多