What Is a Laboratory Jack?
A laboratory jack is an essential tool in laboratories, used for securely positioning instruments such as test tubes or flasks on a stand. These jacks typically have top plates made of materials like stainless steel, plastic, or silicon rubber for slip resistance. Their moving mechanisms, often metal, require regular cleaning and oiling to prevent dust and fiber entanglement for maintenance purposes.
Uses of Laboratory Jacks
Laboratory jacks are commonly used to support a test tube or flask clamped to a stand. They lift the equipment from below for immersion in agitators, heaters, or cooling devices. This setup is useful in experiments involving gas extraction from tubes or flasks, where the height adjustability of the jack allows for the smooth operation of rotors, heaters, and coolers without disrupting the setup. Alternatively, when using rotating blades that require high shear force and fixed height, laboratory jacks facilitate easy height adjustments to prevent sample spillage.
Features of Laboratory Jacks
Laboratory jacks come in various types, including knob type, ratchet handle type, and rotating grip ratchet handle type. The knob type is suitable for low-load applications and adjusts the height by turning a knob. The ratchet handle type, suited for heavier loads, uses leverage for easier height adjustment and can have a removable handle to prevent accidents. The rotating grip ratchet handle type allows for quicker adjustment than the regular ratchet handle type. The choice of jack type depends on experimental requirements, materials used, and laboratory conditions. Regardless of type, it is important to observe load limits and perform regular maintenance to prevent accidents.