Bulletin 94 Complete

3(1) Introduction

CSYS chemistry projects, CSYS biology equipment list

3(1) Opinion

Safety spectacles again.

4(2) Improving microscope contrast

We been looking again at a number of simple techniques involving special methods of illumination.

7(5) Safety spectacles maintenance

The cleaning and disinfection of safety spectacles.

9(7) Substances for cooling curves

We investigated possible alternatives to naphthalene as a substance to be used in a melting point determination.

10(8) A random sequence note generator

Creating a sequence of random musical notes.

12(10) Trade News

14(12) Address List

Bulletin 95 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

Future SSERC exhibitions and demonstrations, Help for S.Y.S. chemistry projects,  Geology fieldwork, Technician post

4(2) Maintenance of microscopes

Advice on the storage, cleaning and general maintenance of microscopes.

7(5) Constant current discharge of a capacitor

Investigations into capacitors.

11(9) Random sequence note generator design

Correction to the previous Bulletin.

11(9) Mobilites of hydrogen and hydroxyl ions

Problems with a method for demonstrating ion mobilities.

12(10) Trade News

14(12) Address List

Bulletin 96 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

Safety focus in this Bulletin.

4(2) Mercury

The mercury hazard – a recent incident and some scare stories – what is the truth?

8(6) Dissolved oxygen measurement

In Bulletin 78 we described apparatus which could be used for the estimation of dissolved oxygen content of water samples. We have received details of a simpler method, which dispenses with the need for a syringe valve.

11(9) A waveform generator circuit

The R.S, Components waveform generator 305-844 can readily be made a very low frequency sine wave generator to show phase lead and lag in reactive circuits.

13(11) Bulletin Supplement – stereomicroscopes.

A summary of stereomicroscope tests.

14(12) Addresses

Bulletin 97 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

Cutting apparatus costs, Saturday opening,  Cost index

3(1) Temperatures on the Flamefast burner

As a result of a fire in a laboratory we were asked to investigate the Rhodes Flamefast natural gas burner type C701.

5(3) Low melting-point solids

Conductivity of molten covalent compounds

5(3) Surplus physics equipment

9(7) Hazards of dressed seeds

Seeds supplied to schools for germination and morphological investigations are increasingly dressed with fungicide/insecticide.

9(7) Trade News

10(8) In The Workshop – diagram animator

A device that can be used to show by means of moving spots of light the direction of flow of a fluid in a diagrammatic sketch, either for unidirectional or circular flow,

14(12) Addresses

Bulletin 98 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

Our advisory service on microbiology

3(1) Detailed advice on safety techniques in teaching microbiology

Techniques, procedures and suitable organisms.

13(11) Trade News

14(12) Address List

Bulletin 99 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

Microbiology lecture, Saturday morning closures – due to Director secondment to Lahore.

3(1) Opinion

‘plus ca change …‘

4(2) A ticker timer drive

How to make a suitable ticker timer driver.

6(4) Air table molecular motion model

Equipment that can be used to demonstrate many phenomena which depend on random motion and collisions of particles.

8(6) In The Workshop – ticker timer drive

How to make a functioning ticker timer drive.

9(7) In The Workshop – air table model

How to make the model described earlier.

13(11) Bulletin Supplement – stereomicroscope summary

14(12) Address List

Bulletin 100 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

Bibliography of safety manuals, Our centenary issue, Saturday closing dates

4(2) The Elodea experiment

The search for a pupil scale experiment which would show convincingly that an illuminated plant gives out oxygen.

5(3) Water sample collecting jar

A simple design.

9(7\) Surplus physics equipment

9(7) EM radiation hazard

Potential hazards of such sources for heart pacemaker wearers

10(8) Sound generation

A self-maintained tuning fork

12(10) Address List

13(11) Bulletin Index Nos. 90 – 99

Bulletin 101 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

Display laboratory, Bulletin contents , Cost index, Saturday morning closures

4(2) Opinion

Duty versus responsibility

5(3) Equipment Offer

Sale of biology, chemistry and physics apparatus

6(4) Hazardous chemicals manual

A sample page of the forthcoming manual.

8(6) Mechanical switch timing with the SSSERC timer/frequency meter

Our timer/frequency meter can be readily adapted for other timing and counting requirements, so that it becomes possible for example to dispense with a scaler/timer, at a considerable saving of money.

11(9) Trade News

13(11) Display Laboratory

Recent additions.

14(12) Address List