The rack is a laboratory accessory used to support test tubes or sample tubes. Its main use is to hold and store these tubes vertically, and the material from which it is made can be wood, plastic or a metal that will not rust, such as stainless steel.The rack, in its traditional form, is a two-tier, thin-wire structure. The lower tier has a standard width grid (which can fit all tube thicknesses), and a supporting surface for the tubes to rest. On the upper level there is only one grid whose spaces coincide with those of the lower one, which serves to direct the tubes.

What is the rack for?

The rack is an indispensable tool for laboratories that handle many test tubes or sample tubes, and that need to keep them in order to continue working. The work areas where they are most often used are:

  • Clinical analysis laboratories
  • Industrial analysis laboratories
  • School labs

The rack serves to:

  • Holding test or sample tubes
  • Store test or sample tubes
  • Sort test or sample tubes
  • Refrigerate sample tubes

The rack in clinical laboratories

Racks used in clinical laboratories should be made of a material that will not potentially contaminate samples, such as plastic or plastic-coated wire. The racks fulfill primary functions in these work areas, which can operate within hospitals or as stand-alone laboratories.

The first function of the rack here is to keep the sample tubes in order . Analysts label each tube with patient data and the type of sample it contains, and place it next to others from different patients, respecting the order in which they will work on them. This helps to prevent the oldest analyzes from accumulating and to have continuity.

The second function of the rack in a clinical laboratory is to hold the sample tubes for refrigeration . Once well labeled and ordered, the rack with the tubes is placed inside the refrigerator, to avoid either the sample decomposing or that reliable results are not obtained in the analysis.

The rack in industrial laboratories

In industrial laboratories, the rack may be made of a material that will not corrode, such as stainless steel. In these workplaces, substances such as acids and bases are handled, which can damage it, so this metal is the most recommended. It is an environment that does require precision in its work, but it is not as rigorous as the clinical laboratory.

The rack holds the sample tubes , which are also labeled with the following information:

  • The client’s name
  • The sample type
  • The process from which it was extracted
  • The analysis technique to be run

The rack allows the tubes to be arranged according to the workload , so that the oldest work is coming out. This prevents an accumulation of unanalyzed samples. This is in the case of liquid samples. If it contains any solid component, depending on the analysis, it will be filtered, centrifuged or shaken.

The rack in school laboratories

In school laboratories, for upper secondary education level and lower grades, the racks used are made of wood, since it is an inexpensive material and no dangerous substances are used in these places. Test tubes are used in these practices mostly to observe how chemical species behave in a harmless reaction.

Here, the rack allows to hold the test tubes that have already been used, to continue carrying out more experiments as the class concludes, and at the end to wash all together those that have been involved in the practice.

It is always recommended to wash glassware very well, and with great care. This is carried back to the rack, which can sometimes be designed with small wooden pillars, to allow the inverted tubes, supported on them, to dry.

Samantha Robson
 | Website

Dr. Samantha Robson ( CRN: 0510146-5) is a nutritionist and website content reviewer related to her area of ​​expertise. With a postgraduate degree in Nutrition from The University of Arizona, she is a specialist in Sports Nutrition from Oxford University and is also a member of the International Society of Sports Nutrition.

Similar Posts

Leave a Reply

Your email address will not be published. Required fields are marked *