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Recycling codes are used to identify the materials out of which the item is made, to facilitate easier recycling process. The presence on an item of a recycling code, a chasing arrows logo, or a resin code , is not an automatic indicator that a material is recyclable; it is an explanation of what the item is made of.
The Resin Identification Code (RIC) is a technical standard with a set of symbols appearing on plastic products that identify the plastic resin out of which the product is made. [1] It was developed in 1988 by the Society of the Plastics Industry (now the Plastics Industry Association ) in the United States, but since 2008 it has been ...
Polycarbonate has a glass transition temperature of about 147 °C (297 °F), [8] so it softens gradually above this point and flows above about 155 °C (311 °F). [9] Tools must be held at high temperatures, generally above 80 °C (176 °F) to make strain-free and stress-free products.
The International Society of Blood Transfusion (ISBT) working group on automation and data processing began in the early 1990s and was later joined by the AABB, the American Red Cross (ARC), the US Department of Defence, [1] and the Health Industry Manufacturers Association in the development of the symbology which would come to be known as the ISBT 128 international standard.
An "informative" (i.e. non-mandatory) annex [7] describes how an ID-000 sized card may be included in an ID-1 size card for processing (e.g. in an ID-1 reader), but with "relief areas around the perimeter of the ID-000 size card to allow it to be removed from the ID-1 size card without punching tools".
The resin identification code for PET plastic products. Plastic bottles are marked at their base with the resin identification code to indicate the material used. [25] [self-published source?] Product labels are attached with adhesive or are shrunk to fit. In-mould labelling is a process of building the label into the bottle during molding.
Portsmouth sign is most often noted clinically when reviewing observations charts which often plot SBP and HR on the same axis, allowing direct observation of situations in which SBP falls below HR. Patients exhibiting this sign are likely to be significantly fluid depleted and in urgent need of aggressive fluid resuscitation.
A polycarbonate is an oxocarbon dianion consisting of a chain of carbonate units, where successive carbonyl groups are directly linked to each other by shared additional oxygen atoms. That is, they are the conjugate bases of polycarbonic acids , the conceptual anhydrides of carbonic acid , or polymers of carbon dioxide .