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4

Obtain a paired bung-and-syringe: Uncap the bottle Insert the stepped bung into the bottle opening Insert the syringe into the plastic bung Invert the whole thing and hold the body of the syringe in one hand and the plunger of the syringe in the other (so it's like a lollipop, with the syringe being the stick) If the bung is not a great fit, consider ...


3

A fair number of laboratories use toys like Fischer Technik or Lego in simple experimental setups. You could use them or similar, modular equipment to build a frame that connects 2 stirrers with an even number of same size gearwheels. (I'm certain I don't have to explain to you, but maybe some other users might not know immedieately) The even number of gears ...


2

if you don't want to insert a stirring implement of some sort, you could spin the entire container, it'd just take a long time for the liquid to get up to speed. Measuring the speed of the stirrer is easy: stick a revcounter on it. These usually consist of an object stuck to the moving part of the stirrer, and a sensor that detects that object (a vane ...


2

Don't use a tea/tablespoon. They are not exact, and require a very steady hand to avoid spilling because they have to be filled to the brim. Instead, use the tools intended for the purpose: a medicine cup or spoon. These are graduated, so you can see exactly how much you have, and they are large enough that you can fill them to the "1 tablespoon" level and ...


2

You might not even need a spoon! you can use a special spoon, or you can recycle the medical cap from the liquid medicine, those little caps that come with mililiter indicators, you can even buy a whole bag o them at low cost! they are very usefull, as they have those walls and they indicate the amount of liquid as I said before. check the google site, it ...


2

I would consider: Freezing the detergent into blocks that are placed into the drawer. it may be that it remains solid enough to not flow throughout the prewash phase but is then melted by the water Permanently modify the soap drawer- shape a stainless steel blanking plate then heat it and push it into the plastic so the drawer becomes dammed. The dam ...


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