Bulletin 130 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

New Assistant Director, Easter Holiday closing, ASE annual meeting Scottish Region, ‘Hazcards’, Equipment questionnaire, Eclipse of the sun

3(1) CLEAPSE Guides

New or revised guides to borrow.

4(2) Organising school science for safety

Originally published in Education in Science January 1982. We offer advice on how to organise your science department to maximise safety.

6(4) Methanal (formaldehyde)

SSERC has been trawling the literature, researching possible carcinogenicity. We present our findings.

8(6) Accident report

An accident involving the escape of bromine from a demonstration diffusion apparatus. This

9(7) Liquefied petroleum gases (LPG).

Instutions  using LPG should read Guidance Note CS4 from the Health and Safety Executive.

9(7) Vital capacity apparatus

A simple spirometer’/vital capacity apparatus (Constructional details are given later in this bulletin.

9(7) Calorimetry of common fuels

Advice on methods for measuring heats of combustion (‘calorific’ value) of common fuels

15(13) Science interfacing register (SIR)

This register, advertised in Bulletin 129, is now a reality, issue number 1 having been sent out to registrants in January.

16(14) Micro-electronic technology (MET) panel

The Centre has taken another initiative in an attempt to provide a national advisory service on MET hardware for school science.

17(15) Constructional details for vital capacity apparatus

How to construct he simple spirometer/vital capacity apparatus mentioned earlier

19(17) Trade News

21(19) Index Bulletins 120-129

Bulletin 131 Complete

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

(A ‘Disposal’ special)

3(1) Introduction

Surplus Equipment – Ballot, Disposal article, Eclipse – again

3(2) Disposal of Waste Chemicals and Potentially Hazardous Materials

This article gives advice and guidance to teachers and technicians who may be handling the unwanted materials and be undertaking some DIY methods of disposal in a manner recommended by their employer.

8(6) Appendix – Recommended DIY methods for disposal of chemicals

Detailed advice for chemicals, broken down by class/type.

Bulletin 132 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

Surplus equipment, Foundation science notes, ‘Salters’ Institute, Science Interfacing register, Cost index, Silver nitrate

3(1) Opinion

Plain English in science

4(2) Fume cupboards

The Department of Education and Science (DES) has recently issued ‘Design Note Number 29 – Fume Cupboards in Schools’.

4(2) Air-rifle hazard

Example of a potentially hazardous use of an air rifle.

5(3) Bell jar implosion

A near-miss in an experiment involving the evacuation of a bell jar.

5(3) Another near miss

A close shave during the disposal of an old sample of phosphorus pentachloride.

5(3) ‘Blazing goggles’

A potential danger when goggles are being used by younger pupils.

6(4) Safety in school science’ articles

ASE publishes a collection in one volume of the articles which have appeared in “Education in Science” over the last four years.

6(4) Pulse rate measurement

In certain circumstances an aid to rapid, reasonably accurate pulse measurement could be very useful.

8(6) Petrol/oxygen explosion

We first described a safe method for such a demonstration in Bulletin 22. Work for a trial school has given rise to the simpler, more convenient set up.

8(6) Silver nitrate

Because of recent high price levels for silver nitrate the reduction of the costs of using this compound has become a topical subject.

10(8) Microburettes

By far the greatest expenditure on silver nitrate falls in titrations for CSYS work. The feasibility of reducing the scale of these operations by the use of much smaller burettes was thus closely examined.

12910) Titration curves

Some experiments lend themselves readily to interfacing, others may not. We seek here merely to illustrate some of the general features of experimental work that may make rewarding the insertion of a computer into the experimental system, using titrations as an example.

15(13) Surplus Equipment Offer

16(14) DIY microburette

Construction of the Mk-1 DIY microburette

18(16) Trade News

Bulletin 133 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

Surplus equipment, Festive season closure, Saturday mornings, Planning committee, Obituary, Mr. J.N.Emery,M.A.

4(2) CLEAPSE Guides

More New or revised guides to borrow

4(2) Air-guns again

Following the publication of a note of the hazards of using air-rifles in the lab. we have been sent an idea on remote firing which, it is suggested, might further reduce the hazards.

4(2) ‘It makes you deaf, you know”

An incident involving a pupil using earphones with a signal generator

4(2) Murphy’s Law

An explosion in a zinc/acid type hydrogen generator

5(3) More cautionary tales

Sulphur/carbon mix, Zinc/sulphur reaction, Flash powder

5(3) SSSERC standard hammer

We have developed a simple apparatus setup to standardise material strength testing.

6(4) Thermocouple thermometer  

We give below details of a simple thermocouple which will allow a wide range of temperatures to be measured with acceptable accuracy.

7(5) Marine aquaria

Our response to enquiries on setting up and maintaining marine aquaria.

10(8) Tidal aquarium

Our original design for a tidal aquarium appeared in Bulletin 6 The original constructional details were for glass tanks and used siphon bottles etc. Since then we have refined and changed the design several times and have decided to publish an updated version.

12(10) Experimental errors – the measurement of g

Following on from the article on computer controlled experiments in Bulletin 132, we have picked out one  for further discussion here, the measurement of g.

17(15) Constant current supply

We usually expect power supplies to be constant voltage devices, ignoring the effect of internal resistance.

19(17) Surplus Equipment

21(19) In the Workshop

How to make the SSERC Standard Hammer

22(20) Trade News