February 2006 issue of the Cornell Flower Bulb Research Program Research Newsletter:
In 2005 an ethylene sensor for the use in tulip storage rooms was introduced in the market. Until then measuring ethylene with a handy device had been impossible. The MACView ethylene analyzer, produced by Hatech (www.etheen.com) was tested by Applied Plant Research (PPO) at an export company and at a company specialized in the storage and preparation of tulip bulbs.
Read the whole article. Starts on page 4.