Do frost-free freezer mats work?

Do frost-free freezer mats work? These pads totally work. The frost basically forms on these pads instead of on the side walls of the chest freezer. The only negative is the pads are kind of small so I had to use 8 pads total just for a small freezer. What is the difference between frost-free […]

What are XL1 Blue competent cells?

What are XL1 Blue competent cells? XL-1 Blue Competent Cells for routine cloning allow blue-white color screening, single-strand rescue of phagemid DNA, and preparation of high-quality plasmid DNA. Derivatives enable higher transformation efficiency, transformation of methylated DNA, choice of antibiotic resistance, and no F episome. How do I make XL1 Blue competent cells? Autoclave 100 […]

What is ankarsrum mixer?

What is ankarsrum mixer? The Ankarsrum mixer comes with a large stainless steel bowl for bread making, and a smaller BPA-free plastic bowl for cakes, cookies and creams. The dough roller, dough hook, and dough knife attach to the stainless steel bowl; the cookie and balloon whisks attach to the plastic bowl. Who makes Ankarsrum? […]

Will a 12V LED run on AC?

Will a 12V LED run on AC? Yes, because LED’ s really are a Direct current device light that is hooked up to a circuit. When looking at the circuit there is the 12 volt DC battery, a switch, and the LED. LEDs are DC devices. An AC LED simply adds a rectifier for the […]

What is cholinesterase testing?

What is cholinesterase testing? Definition. Serum cholinesterase is a blood test that looks at levels of 2 substances that help the nervous system work properly. They are called acetylcholinesterase and pseudocholinesterase. Your nerves need these substances to send signals. Acetylcholinesterase is found in nerve tissue and red blood cells. When should cholinesterase be checked? Why […]

What are the 3 types of carburetors?

What are the 3 types of carburetors? There are three general types of carburetors depending on the direction of flow of air. Types of Carburetors. Constant Choke Carburetor: Constant Vacuum Carburetor: Multiple Venturi Carburetor: How do I choose a carburetor? To arrive at the most appropriate carburetor choice, there’s a basic formula: engine displacement multiplied […]

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