What kind of printing paper does the lung function tester use?

The printing paper used by the lung function detector is mainly A5.

Paper specification refers to the paper made, after trimming cut, cut into a certain size. In the past, how many "open" (such as 8 open or 16 open, etc.) to show the size of the paper, I use the international standard, stipulated in A0, A1, A2, B1, B2, A4, A5. Mark to indicate the size of the paper. The standard specifies that the scale relation between the width (expressed as X) and length (expressed as Y) of the paper is X: Y=1: n.

According to the basic area of paper format, the format is divided into Series A, Series B and Series C. The format size of A0 is 841mm×1189mm, and the format area is 1 square meter. The size of B0 is 1000mm×1414mm, and the size is 2.5 square meters. The format size of C0 is 917mm×1279mm, and the format area is 2.25 square meters. Copy paper format specifications only A series and B series. If the A0 paper is divided into two equal parts along the length way, it will become the A1 specification. If the A1 paper is divided along the length direction, it will become the A2 specification, so followedto A8 specification; B8 paper also by this method to B8 specifications. The sizes of A0 ~ A8 and B0 ~ B8 are listed in the following table. Among them A3, A4, A5, A6 and B4, B5, B6 and other 7 format specifications for copy paper commonly used specifications.

For example, "A4" paper is A paper of basic size of A folded four times, so the area of A piece of A4 paper is one over 2 to the fourth power of the basic paper area, which is 1/16. And so on.

There is also a type of k-paper, is what we often say open paper, only in the domestic use of K-paper. A paper is usually used. Whether A type B type, its classification, such as the A5 is twice the A6, A4 is twice as large as the A5, twice that of A3, A4, B4 is twice the B5 B3 is twice B4, and K type classification is to put A big 1 K of the paper is divided into two for 2 K, 2 K of the paper is divided into half for 4 K, divides into the 4 K is 8 K, half divided half for 16 K, 8 K divided half 16 K to 32 K, etc.