Laboratory Grade Crystalline Sodium Chloride, 2.5kg Item Type_Cell Model this insulated wire keeps polarity

this insulated wire keeps polarity color-coded across the mid-distance between instruments and student-built bench circuits

natural curves

Fine-mesh dual-purpose net captures adult insects overhead and aquatic larvae below the surface for field entomology and life-cycle observation work

Designed for safer per-desk optics

The waves generate nodes & antinodes & their full wave length or half wave length can be measured

Laboratory Grade Crystalline Sodium Chloride, 2.5kg Item Type_Cell Model this insulated wire keeps polarityLarger crystal 2. 5kg of laboratory grade sodium chloride, the slower dissolving variant of the fine crystalline form for salt crystal growing demos and solubility rate experiments.