About Barbro Hjalmarsson
Lived 1919 – 2008 (aged 88–89). Barbro Hjalmarsson was a Swedish inventor.
Hilda Barbro Hjalmarsson (10 December 1919 – 13 February 2012) was a Swedish nurse, care teacher and inventor.
Biography Barbro Hjalmarsson invented the battery-powered blood cradle "Triomix", which automatically shakes a test tube with blood so that the blood cells are separated from the blood plasma correctly. Her invention saved both the time it took to turn each tube 10-12 times as well as increased quality in the test by avoiding human error. She was granted a patent in 1994 for this "Mixing apparatus comprising a mixing plate intended for receiving test tube tubes, which is imparted to a rocking movement of a certain frequency". Her invention reduced the manual work and made the sampling safer.
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Contemporaries
People whose lives overlapped Barbro Hjalmarsson's
Frequently asked questions
Who was Barbro Hjalmarsson?
Swedish inventor
When was Barbro Hjalmarsson born?
Barbro Hjalmarsson was born on 10 December 1919 in Närke.
When did Barbro Hjalmarsson die?
Barbro Hjalmarsson died in 2008 in Degerfors.
What was Barbro Hjalmarsson's occupation?
Barbro Hjalmarsson was an inventor.
What nationality was Barbro Hjalmarsson?
Barbro Hjalmarsson was Swedish.
Sources & further reading
· Wikipedia: Barbro Hjalmarsson
Cite this page
APA: Biography.guide. (2026). Barbro Hjalmarsson. https://biography.guide/barbro-hjalmarsson/
MLA: "Barbro Hjalmarsson." Biography.guide, https://biography.guide/barbro-hjalmarsson/.
Chicago: "Barbro Hjalmarsson." Biography.guide. https://biography.guide/barbro-hjalmarsson/.
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