What does TC stand for on a pipette?

Asked by: Cheri Jones

to containto contain” and “to deliver” respectively. In a ‘TC’ marked pipette, the contained quantity of the liquid corresponds to the capacity printed on the pipette, While in ‘TD’ marked pipette, the delivered quantity of liquid corresponds to the capacity printed on the pipette.

What does TC on a pipette mean?

TC = to contain; the pipette is calibrated to contain a defined amount of. liquid, but dispenses less; residual liquid remains on the. inside wall of the pipette.

What does TC mean on glassware?

To Deliver and To Contain

To Deliver and To Contain



Glassware designed to contain, like graduated cylinders and volumetric flasks, are usually marked with a TC. When liquid is poured from a piece of glassware a small amount remains behind, clinging to the sides of the vessel.

Is a serological pipette TD or TC?

Serological pipettes are of two types: TC (“to contain”) or TD (“to deliver”). Shown is the explanatory label of a TD 5 ml pipette. Microorganisms are everywhere – in the air, soil, and human body as well as on inanimate surfaces like laboratory benches and computer keyboards.

What do the initials TD and TC near the tip of a pipette stand for?

The designation of whether the pipette is “to deliver” (TD) or “to contain” (TC) is marked on most serological pipettes.

Is graduated cylinder TD or TC?

Graduated cylinders are calibrated either “to contain” (indicated liquid volume inside the cylinder) and marked as “TC” or “to deliver” (indicated liquid volume poured out, accounting for liquid traces left in the cylinder) and marked “TD”.

Why are the differences between TC and TD important?

When a vessel is calibrated “TD”, it differs from a “TC” calibrated vessel in that a drainage holdback error, the amount of water required to wet the inner surface of the vessel in contact with the water, is added to the “TC” volume. The “TD” vessel then delivers the same volume as contained in a “TC” vessel.

What do the symbols TD and TC mean on volumetric glassware?

To indicate this difference, volumetric glassware is usually marked TD meaning to deliver or TC meaning to contain. Certain types of pipets, especially micropipets, are designed to contain a certain volume of liquid and these are marked TC.

What does TC mean in chemistry?

Technetium is a chemical element with symbol Tc and atomic number 43. Classified as a transition metal, Technetium is a solid at room temperature.

Which of the following would be labeled TC to contain )?

A vessel that is calibrated to contain a specified volume is labeled TC.

How do you use a TC pipette?

The pipette must be held vertically. With the mark at eye level. Move the pipette to the receiving vessel with a pipette held vertically. And the pipette tip touching the wall.

How do you read a volumetric pipette?

When using the pipette you must ensure you hold it with two hands. One just below the Bulge. And one controlling the flow of liquid using the bulb.