Bulletin 125 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

Dr Meek’s infra-red spectrograms, Technicians’ guide – microscope care and maintenance, Microbiology in Bulletin 126, Bulletin bulk distribution, Separate the science in the bulletin? Cost index

5(3) Surplus physics equipment

7(5) Hazards of 1,2-dibromoethane

Due to evidence of its carcinogenicity, we have withdrawn it from our chemicals list.

7(5) Modified meta blocks

Modification of method in Bulletin 115 for reduction of metal oxides with meta blocks.

8(6) Infra-red spectrograms

List of spectra available

9(7) Display Laboratory

New additions

9(7) Trade News

12(10) Address List

Bulletin 126 Complete

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

(A microbiology special)

3(1) Introduction

Microbiology and home economics, Logo competition

3(1) Microbiology in schools

Rationale, methods, levels, sterilisation and suitable organisms.

17(15) Trade News

18(16) Address List

Bulletin 127 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 

Cassette recorder conversion, Bulletin distribution

4(2) Hydrogen generator

A design for a home made hydrogen generator

6(4) Random access memory

How it works

10(8) Trade News

12(10) In the Workshop

How to make an electrolytic generator such as the hydrogen generator mentioned earlier.

14(12) Address List

Bulletin 128 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 

Uncollected surplus equipment, Cost index, Summer holiday closing

4(2) Oxidation of ammonia

The oxidation of ammonia as carried out in the model of the Ostwald process has been causing some problems. We had another look at it and present a modified version of a small scale method.

7(5) Surplus Physics equipment

10(8) Chloroplast model

How to construct a model chloroplast.

12(10) Safety signs regulations 1980.

How these new regulations will impact schools.

12(10) Notification of accidents Regulations 1980

How these new regulations will impact schools.

13(11) Accident with diethyl ether

A fire in a refrigerator

13(11)  bis-CME warning

A danger relating to a recent article in EiC.

14(12) Address List

Bulletin 129 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

Bulletin distribution, Bulletin format, ‘Hazcards’, Atomic absorption spectroscopy, Saturday mornings, a reminder, Bumper issue

4(2) Interfacing

The use of micro-electronic circuitry in science teaching – where next?

5(3) CLEAPSE Reports

Available to borrow.

5(3) Accident reports

The use of the ‘Arculus’ method for generating oxygen, plastic ‘dropping bottle’ of the type designed to deliver a few drops of reagent upon inversion and gentle squeezing.

5(3) Thoron ‘cows’

Some concern has been expressed of late over the use of so-called ‘thoron cows’ in schools.

6(4) Oscilloscope earth fault

A potentially hazardous fault in the casings of some Telequipment Serviscope Minor CRO’s.

6(4) ‘EiS’ accident reports

Involving: Thermit reaction, oxidation of ethanal (acetaldehyde) by a potassium manganate (Vll)/sulphuric acid mixture, a hydrogen/oxygen explosion, catalytic oxidation of sulphur dioxide

7(5) ‘Turbid cubes’

With ‘turbid cubes’, ray paths can be made visible at various points in the microscope. In this way the uses of the condenser controls can be directly illustrated.

8(6) Methods for producing flame coloration

Three simple methods, not involving any major modification of the burner, are given.

9(7) Atomic absorption spectroscopy model

How to construct a working model of an atomic absorption spectrophotometer.

12(10) Infra red detector

How to construct an infra-red radiation detector which  would be cheap enough to be made in pupil quantity for class use.

13(11) Surplus equipment offer

15(13) In the Workshop

Constructional details for the atomic absorption spectroscopy model.

17(15) Trade News