Object StatementOvarian monitor with attached transformer and (2) assay tubes, Ovulation Meter model OM5, plastic / metal / electrical, developed by Professor James B Brown, made by St. Michael NFP Services Pty Ltd, Melbourne, Victoria, Australia, c. 1990-1994
Physical DescriptionOvarian monitor, Ovulation Meter model OM5, for home use in natural family planning and assisted reproduction, plastic, developed by Professor James B Brown, made by St. Michael NFP Services Pty Ltd, Melbourne, Victoria, Australia, c. 1990-1994
The Brown ovarian monitor (also called an Ovulation Meter) is an electrically powered device, intended to be used at home by a woman to assist in the charting of her ovarian cycle by analysing the hormones in her urine.
The meter itself is encased in a grey plastic box with a blue face. It has a slot with a hinged lid where a prepared assay tube of urine is inserted, on/off and 5 min/10 min toggle switches, and an LED read-out screen. It is accompanied by two small plastic assay tubes with lids, and a transformer that converts the 240V AC mains supply to 12V DC. The complete home kit would also include a urine-collecting jug, syringes for measuring water and urine, a test tube rack, and airtight storage tins, but these items did not accompany the donation.
The ovarian monitor identifies the beginning and end of the fertile phase of a woman's monthly ovarian cycle, by detecting the oestrogen rise that marks the beginning of fertility and the rise or progesterone at the end of fertility. To do this it utilizes a micrococcus enzyme immunoassay to measure the levels of oestradiol and progesterone metabolites in the urine.
MarksWording inscribed on the face of the meter includes:
'Ovulation meter/ Made in Australia for/ St. Michael NFP/ SERVICES PTY. LTD./ Melbourne/ [etc.]'.
On the transformer there is a black and gold manufacturer's label which reads:
'Arlec/ AC ADAPTOR/ INPUT 240V/50Hz/OUTPUT 12V DC/ 500 mA/ [etc.]'.
A white paper sticker on the side of the transformer is printed:
'Dr Barbara Gross, BPharm, MSc, PhD/ Senior Scientific Officer/ Department of Clinical Endocrinology/ Westmead Hospital/ WESTMEAD NSW 2445'.
A second paper sticker is printed:
'Byron & Francine Pirola/ 7 Duke Street/ Kensington NSW 2033'.