Home | Community | Message Board


This site includes paid links. Please support our sponsors.


Welcome to the Shroomery Message Board! You are experiencing a small sample of what the site has to offer. Please login or register to post messages and view our exclusive members-only content. You'll gain access to additional forums, file attachments, board customizations, encrypted private messages, and much more!

Shop: Sporeworks.EU Spores for European Microscopy   Myyco.com Isolated Cubensis Liquid Culture For Sale   Mushroom-Hut Liquid Cultures   North Spore Injection Grain Bag

Jump to first unread post Pages: 1
moldy print, what to do?
    #29604248 -

Got a print for Mckennaii from  a friend (I know but sporeworks lists it and I trust them). This was a really light print from the Netherlands, on glass. I've streaked it, swabbed to pf tek, off different areas of the print, everything is pure green.

Lost cause, or is there any saving this?

Edit- I know the plate is toast.



--------------------

Edited by bluescreen (06/16/26 09:14 AM)

Extras: Filter Print Post Top
Re: moldy print, what to do? [Re: bluescreen] * 1
    #29604282 -

Try again. We dont know if it was the print, the inoculation, the agar, or anything really. We need more info to help you figure out what might be primary culprit of contamination.

That plate is a lost cause

Extras: Filter Print Post Top
Re: moldy print, what to do? [Re: CocaineBuffet] * 3
    #29604318 -

Serial dilution.

Cook some sterile water and get a series of small sterile containers. Thoroughly mix a solution of spores in a couple ML of sterile water. Immediately (before they settle), with a clean syringe/pipette, move about 1/10th of it to another couple ML of water. Now you have a 10x diluted spore solution. Shake it to shit again, and using a new syringe, pull a 10th of that into another container to get 100x dilution, etc. You can go as far as you want, but 100x is probably a decent start. You can always do more later.

Then streak your 100x solution. It will have 100x less spores/contam in it, and they'll be 100x farther apart. So instead of having many germinations on a plate that all instantly collide and dirty each other, you might only have one or two, but they'll be separate enough that you can move the myc to a clean plate before the contam bumps into it.


--------------------
.~`  𝔅 𝔞 𝔤 𝔢 𝔩  🥯  𝔅 𝔦 𝔱 𝔢 𝔰  `~.
:salute: CAKE WARS III STARTS SEPTEMBER 1st :salute:

Extras: Filter Print Post Top
Re: moldy print, what to do? [Re: Rasmodius]
    #29604481 -

CocaineBuffet said:
Try again. We dont know if it was the print, the inoculation, the agar, or anything really. We need more info to help you figure out what might be primary culprit of contamination.

That plate is a lost cause



I streaked a couple of plates with an inoculation loop, flame sterilized, and poked a couple of swabs that were barely touched to the print (same area) into BRF pucks on glass petris. All green. Did a couple more plates, streaked "correctly", from an area of the print furthest from the first try. Sames. The plates are ones I poured weeks ago and no other issues with those, same for the BRF pucks.

Rasmodius said:
Serial dilution.

Cook some sterile water and get a series of small sterile containers. Thoroughly mix a solution of spores in a couple ML of sterile water. Immediately (before they settle), with a clean syringe/pipette, move about 1/10th of it to another couple ML of water. Now you have a 10x diluted spore solution. Shake it to shit again, and using a new syringe, pull a 10th of that into another container to get 100x dilution, etc. You can go as far as you want, but 100x is probably a decent start. You can always do more later.

Then streak your 100x solution. It will have 100x less spores/contam in it, and they'll be 100x farther apart. So instead of having many germinations on a plate that all instantly collide and dirty each other, you might only have one or two, but they'll be separate enough that you can move the myc to a clean plate before the contam bumps into it.



I'll give this a shot, thanks!


--------------------

Edited by bluescreen (06/15/26 06:58 AM)

Extras: Filter Print Post Top
Re: moldy print, what to do? [Re: bluescreen]
    #29604889 -

Did you use a SAB and proper sterile technique? Did you make the plates?

Extras: Filter Print Post Top
Re: moldy print, what to do? [Re: CocaineBuffet]
    #29604992 -

CocaineBuffet said:
Did you use a SAB and proper sterile technique? Did you make the plates?



Yes, SAB, proper technique. Made the plates around 3 weeks ago, no sign of contam on unused ones or a bunch that were used for transfers.

One of the swabs to BRF puck shows no sign of anything, which is a good thing, hopefully those spores germinate. Will try the serial dilution too.


--------------------

Extras: Filter Print Post Top
Re: moldy print, what to do? [Re: bluescreen]
    #29619384 -

Haven't had a chance to try Rasmo's dilution, but had a cool window the other morning where I could cut the fans and do some much needed transfers, and did a quick 'psuedo" drag of these bastards (inoc loop slogged through). Hoping the mouth stays white. Not betting on it.



Just to update


--------------------

Extras: Filter Print Post Top
Jump to top Pages: 1

Shop: Sporeworks.EU Spores for European Microscopy   Myyco.com Isolated Cubensis Liquid Culture For Sale   Mushroom-Hut Liquid Cultures   North Spore Injection Grain Bag


Similar ThreadsPosterViewsRepliesLast post
* caps getting wet/moldy when trying to make print!? krhg49 1,150 3 11/05/10 02:28 PM
by adamantasaurus
* how far to spore prints go? AKA PC 4,184 11 01/28/03 08:07 AM
by debianlinux
* making print? socratesmind 819 7 10/31/02 02:25 PM
by Enoch
* how long do spore prints last in open air? b0ngman 2,120 5 04/26/06 12:34 PM
by wiggles
* Re: Pan Cyan prints "vendor quality"
( 1 2 all )
Anonymous 4,340 38 03/25/01 05:15 PM
by ralphster44
* God gave me one last chance (Please help with spore printing) Jutboy 820 8 07/26/05 08:31 PM
by Psychoslut
* moldy fungus homelessheathen 293 1 01/29/04 07:51 AM
by Prisoner#1
* growing in the wet tropics from a spore print tranquilo 670 2 02/17/04 05:47 AM
by tranquilo

Extra information
You cannot start new topics / You cannot reply to topics
HTML is disabled / BBCode is enabled
Moderator: Shroomism, george castanza, RogerRabbit, veggie, mushboy, fahtster, the_chosen_one, LogicaL Chaos, 13shrooms, hamloaf, cronicr, Stipe-n Cap, Pastywhyte, bodhisatta, Tormato, Land Trout, A.k.a
174 topic views. 8 members, 120 guests and 93 web crawlers are browsing this forum.
[ Show Images Only | Sort by Score | Print Topic ]
Search this thread:

Copyright 1997-2026 Mind Media. Some rights reserved.

Generated in 0.028 seconds spending 0.01 seconds on 16 queries.