Bulletin 118 Complete

The page numbers refer to the pages in the pdf. (The numbers in brackets are those given in the actual bulletin)

3(1) Introduction

The problem of electrical safety testing, WP.A. apparatus design competition results

4(2) A sparking generator using a car ignition coil

In Bulletin 49 we gave a simple circuit using a relay, for producing a sparking generator for those experiments in chemistry which need one, e.g. the combination of nitrogen and oxygen in air. We decided to update the circuit by using electronic ignition.

6(4) Circular motion experiments

Using the Harris data memory

11(9) Help wanted

Assistance sought with the testing of o.h.p. lamp bulbs

11(9) Trade News 

13(11) Low voltage power units

A summary of tests carried out on low voltage power supplies. Individual reports on these may be borrowed by writing to the Director.

14(12) Address List

Bulletin 119 Complete

The page numbers refer to the pages in the pdf. (The numbers in brackets are those given in the actual bulletin)

3(1) Introduction

Technicians’ workshops, Easter closing dates

4(2) The hazards of biological stains

Their dangers and safe usage.

6(4) Temperature compensation in pH meters

How to compensate for temperature effects in uncompensated meters.

8(6) 100 vol hydrogen peroxide

Potential hazards of keeping 100 vol solutions as a stock.

9(7) Quiz game control unit

Making a ‘first to the buzzer’ circuit.

12(10) Display Laboratory

Latest additions

13(11) Trade News

14(12) Address List

Bulletin 120 Complete

The page numbers refer to the pages in the pdf. (The numbers in brackets are those given in the actual bulletin)

3(1) Introduction

Planning Committee reorganisation, SSSERC subscriptions

4(2) Bioluminescence

Some classroom activities on this fascinating topic.

7(5) Demonstration digital display

For some time we have sought a digital display which could be driven from t.t.l and which would be large enough to be seen from the rear of a classrooms

8(6) In the Workshop

How to make the demonstration digital display as described above.

10(8) Modified deflagrating spoons

A small modification of these enables them to fit into a boiling tube

11(9) Trade News

12(10) Address List

13(11) Index, Nos. 110 – 119

Bulletin 121 Complete

The page numbers refer to the pages in the pdf. (The numbers in brackets are those given in the actual bulletin)

3(1) Introduction

Devon Reid, H.M.I, SYS chemistry equipment list, ‘O’ grade microscopes, Cost index, Summer holiday closing

4(2) Chemistry experiments, advice on safety

The third of our articles from the ASE Safety Committee, Materials and Processes Group, Advice on Safety in Chemical Experiments.

8(6) Rotation of the centre of mass of a body

An idea for demonstrating that the centre of mass of a body undergoing projectile motion is not affected by any rotational motion which the body may have.

9(7) Scaler/frequency meter

A correction to the article in Bulletin 115

9(7) Trade News

10(8) ‘O’ grade microscopes

A comparative survey of microscopes for work up to ‘O’ grade.

14(12) Address List

Bulletin 122 Complete

The page numbers refer to the pages in the pdf. (The numbers in brackets are those given in the actual bulletin)

3(1) Introduction

Planning Committee, SSSERC questionnaire

5(3) Opinion

Hidebound equipment?

6(4) Once-a-week timer

A once-a-week timer to allow for the regular activation of laser tubes.

8(6) Surplus equipment

10(8) Combustion of charcoal blocks

Charcoal blocks can continue to smoulder long after the reduction of the copper or lead oxide is over and the laboratory closed up for the day.

10(8) Two laboratory accidents

Oxidisers in a bin, sparking in a flask washed with propanone.

11(9) Trade News

13(11) Display Laboratory

Latest additions.

14(12) Address List

Bulletin 123 Complete

The page numbers refer to the pages in the pdf. (The numbers in brackets are those given in the actual bulletin)

(A Restricted Chemicals special)

3(1) Introduction

3(1) Banned and Restricted chemicals

A lengthy list.

14(12) Address List

Bulletin 124 Complete

The page numbers refer to the pages in the pdf. (The numbers in brackets are those given in the actual bulletin)

3(1) Introduction

Logo competition Page, More questionnaire replies, please! Physics equipment list, Making cassette recorders compatible with language labs, Repair of pupil oscilloscopes, Holiday closing dates

7(5) Disposable spraying booth

using a cut-away cardboard box as a small disposable shield or booth for spraying chromatograms.

8(6) Anti-splash guard for test tubes

A simple means of preventing ejected liquid from travelling from a test tube across the bench

9(7) Revised list of micro-organisms

A revised list of available organisms.

9(7) ‘H’ grade microscopes

A list of suitable models available

14(12) Address List