"It lets you measure liquids, look at what's inside.
"Spinsolve has met with a very encouraging market response, particularly from chemists in the pharmaceutical, food, polymer, petrochemical and education industries by providing a ... offering in a convenient package at a very competitive price."
Coy said the capital injection would allow Magritek, which has doubled its turnover approximately every 18 months, to grow more quickly, including opening a new office in the United States.
Rangatira's chief executive, Ian Frame, said Magritek's technology was underpinned and protected by world-class intellectual property.
Europe and the United States each accounted for about 40 per cent of Magritek's revenues, though the company - about a third of whose staff have PhDs - was forecasting significant growth in China and India in the near future.
Frame said: "We like to think our investment will enable Magritek to help achieve its founder Sir Paul Callaghan's vision of creating a niche high-tech sector capable of transforming New Zealand's culture and economy."