Jopo said:Can anyone point me to a small supply of Lycopodium spores and nets please. Project planned for S. Wales in August
Jopo
Graigwen said:Baldwins do sell them, but as a health food.
I don't write from experience, but would be very worried by the possibility of contamination if using Lycopodium spores for tracing. The spores have evolved to get everywhere and I would guess you need separate teams to deploy and recover them.
https://www.baldwins.co.uk/baldwins-lycopodium-club-moss-powder-lycopodium-clavatum
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Minion said:Rhodamine B?
Does anyone have a link to a guide on how to do it?
I?ve got a project i want to trace. I could simply tip the dye in the sink and stand and wait at where I *think* it may come out, but I?m sure there is a better way of doing it.
JoW said:Minion said:Rhodamine B?
Does anyone have a link to a guide on how to do it?
I?ve got a project i want to trace. I could simply tip the dye in the sink and stand and wait at where I *think* it may come out, but I?m sure there is a better way of doing it.
Yes, that's the one.
How soon are you wanting to do this? I'm hoping to put on another dye tracing workshop with the bcra later in the year, but probably not until the late autumn now. I will be discussing it at the council meeting at the end of the month.
There are various things to know consider such as calculating how much dye to use (and if you need to notify the environment agency) and collection methods - usually activated charcoal or cotton wool but it depends on the type of dye.
Minion said:Id like to do it soon, but we need a bit of rainfall first I suppose? It?s the collection methods that really interest me.
Would be interested in the workshop, do you have a rough idea of where/when?
Jopo said:The main reason for using spores is that this will be a repeat of a positive test using optical brightener. The result was so surprising that cavers started muttering about the farm doing their weekly wash.
Graigwen said:Jopo said:The main reason for using spores is that this will be a repeat of a positive test using optical brightener. The result was so surprising that cavers started muttering about the farm doing their weekly wash.
This is indeed a potential problem with optical brighteners. Last week I confirmed that one proposed test site took the farm washing machine output.
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