Q: What is different between the stir base unit in this package and:
The Stirstarter Yeast Stir Plate 5L
Your Price: $80.00
Item Number: 390-1937?
A: the size of the plate on the % liter version can accommodate up to a 5 Liter flask, where the one included in the kit only accommodates the 2 liter flask or under
Q: What power voltage and frequency does the stirrer use?
A: This stir plate draws about 100mA.
Q: does this kit include a "keeper magnet" ?
A: Yes, A Keeper magnet is included as part of the Stirplate on the kit
Q: How many drops of the anti-foam solution should I use? Is this the same anti-foam solution as product 99-3017?
A: 1 to 2 drops should be sufficient for a starter. It is the same product listed as item #99-3017
Q: What size bund or stopper is used in this kit?
A: A 9.5 bung will work with the flask included in this kit.
Q: Is a stir bar included?
A: A stir bar is included in this kit.
Q: This kit comes with an airlock, do you recommend that over foil or a foam stopper? I've seen mixed feeling on this but can't find any pros or on either way.
A: It really is just personal preference. We include a bung and airlock because it leaves the least amount of chance for mistakes. Just as many people use tin foil, and there is nothing wrong with that either.
Q: Is this a Pyrex flask?
A: This is not a Pyrex flask. It is made of borosiliciate glass which is the same material that makes up a pyrex flask.
Q: Hi - I bought one of your yeast starter equipment kits from the Ann Arbor store. (Kit with the black stir plate and 2000 ml flask.) How durable is the flask? Can it be used to directly heat on a gas stove and then placed directly in cold water to cool? I ask this because the flask does not indicate a brand or type of glass. Thanks
A: This is a borosilicate glass and can withstand direct flame. Once you have boiled, you can add this directly to cold water for cooling- Thank you for your question.