Home |
Search |
Today's Posts |
#8
|
|||
|
|||
Hormone rooting powder - sell by date??
"thesquire" wrote in message ... I have been told on good authority that the talc powder based preparations lose their effectiveness after about eight months, even if kept in a closed container and refrigerated. The manufacturers own website for "Strike2" from PBI gives a minimum stored shelf life of two years and at least another two years after opening if uncontaminated. They don't say anything specific about optimum storage conditions, but keeping most things organic and chemical in the dark (to use the technical terminology) away from UV light, and relatively cool seems to prolong their lifespan. quote An unopened container of Strike2 has a minimum shelf life of two years. Strike 2 is registered for sale under the guidelines set by the UK Regulatory Authority and as part of this registration such storage stability must be proved. Once a container has been opened the shelf life can be just as long, however, it may be necessary to replace product in shorter time spells due to contamination from soil or plant debris in the powder. http://www.pbi.co.uk/products/239/1/?Strike+2 /quote You'd imagine PBI would be keen to promote as many replacement sales as possible - and so this can presumably be taken as a conservative estimate of the product's longevity. The fungicidal component in rooting poeder is apprently more persistent, and so this alone may account for continued success when using much older powder - up to 8 or to 10 years old in my case. Or maybe its benefits are overstated for some material in any case. When this question was asked on Gardeners Question Time in 2002 two of the panellists admitted they'd stopped using it years ago with they claimed, no appreciable difference. http://www.bbc.co.uk/radio4/gqt/fshe...heetsq12.shtml michael adams .... I've checked on my containers and none have any dates. Are they supposed to ??? Where can I get some 'fresh' rooting powder from ??? |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
rooting hormone query | Orchids | |||
rooting hormone query | Orchids | |||
Hormone rooting compound ? | United Kingdom | |||
rooting hormone | Gardening | |||
Shelf liife of rooting hormone | United Kingdom |