为了扩大取样范围，采样器扩展了5英尺（1.53米）的长度还有对不锈钢丝程度的修改。扩展单位长度，解开原来的钢丝，在中间添加新的钢丝，让各部分的钢丝穿过闸阀。

注意：由于塑料的弹性，稍长一点的扩展单元更容易受到液体样品的影响而弯曲。
Extension sections in 5-ft. （1.53 m） lengths are available to extend the Sampler ａnd come with a length of stainless steel wire. To extend the unit, remove rope, untie the original wires, add the new wire between the two, ａnd slide the wire through all the sections.

*NOTE: Because of flexibility of the plastic, longer units are subject to more bending when filled with liquid.