IS 10584-1: Glass marking pencils, Part 1: With wooden casing by Bureau of Indian Standards

Author:Bureau of Indian Standards
Language: eng
Format: epub
Tags: data.gov.in;standardsbis.in;public.resource.org
Published: 1983-03-23T16:00:00+00:00

GLASS PLATE

WOODEN STOOL

Fig. 1 Apparatus for Testing Breaking Strength of Slip

♦Specification for water for general laboratory use ( second revision ).

IS: 10584 ( Part 1) - 1983

C-2. PROCEDURE

G-2.1 Pencils shall be prepared so that unsharpened tip of the slip extends 5 to 6 mm from the casing.

C-2.2 Fix the pencil firmly at a distance of 35 to 40 mm from the exposed end of slip in a clamp such a way that the pencil remains at an angle of 45'' to the horizontal smooth glass plate.

C-2.3 Add weights gradually on the top of the clamp. Find the load at which the slip breaks.

C-2.4 Repeat the test at four different places on th« pencil and find the average breaking load of the slip, %^

APPENDIX D ^>^

{ Clause 7A) VS^

fITY

SAMPLING AND CRITERIA FOR CONFORMITY OF GLASS MARKING PENCILS WITH WOODEN CASING

D-1. LOT

.€^\^^

D-1,1 In any consignment all the packets of pencils of same type and colour manufactured during the same period under similar conditions shall be grouped together to constitute a lot.

D-1.2 Number of pencils to be selected from each lot shall depend upon the size of the lot and shall be in accordance with col 1 and 2 of Table 1.

IS : 10584 ( Part 1 )-1983

D-1.2.1 These pencils shall be selected from the lot at random and to ensure the randomness of selection, procedure given in IS ; 4905-1968* may be followed.

D-2. NUMBER OF TESTS AND CRITERIA FOR CONFORMITY

D-2.1 The pencils selected at random in accordance with col 3 of Table I shall be divided into two parts in accordance with col 4 and 6 of Table 1.

D-2.2 The pencils selected in accordance with col 4 of Table 1 shall be subjected to test for dimensions ( i^^ 6,1 ), eccentricity of slip with the casing ( see 6.2 ) and gluing and warpage of wood casing ( see 6.5 ). A lot shall be considered as conforming to these requirements if the number of defectives found in the sample is less than or equal to corresponding permissible number of defectives as given in col 5 of Table 1.

D-2.3 The pencils selected from the sample in accordance with col 6 of Table 1 shall be examined for legibility and stability ( see 6»3 ), marking characteristics ( see 6.4 ). If none of the pencils in the sample fails in these tests the number of pencils shall be tested for breaking strength of slip ( see 6.7 ). If all the pencils pass, the lot shall be considered as conforming to this test.

D-2i4 If the lot is conforming to all the requirements as mentioned in D-2.2 and D-2.3, the test for water soluble matter of slip ( see 6.6 ) shall be carried out as given in Appendix B. If the sample passes, the lot shall be considered as conforming to this test.

D-2.5 The lot shall be accepted, if D-2.2, D-2,3 and D-2.4 are satisfied, otherwise rejected.

^'^

>"

5*

'^^

►Methods for random sampling.

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.