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SAND TIMER 3 MINUTE (YELLOW) PK3 is backordered and will ship as soon as it is back in stock.
Robust colour co-ordinated sand timers giving accurate interval times for individualpupil use. Ideal for use in both Science and Maths lessons.Size: 90mm x 25mm.
We're expanding Bunsen to allow comparison of non-science products, too! Preview the new site here (beta)
