1. Development of Hydrostatic Vesting Meter with Simple Equipment
Ammara Ittipongse1,*
1Applied Physics Department, Faculty of Science and Technology, Suan Sunandha Rajabhat University, Bangkok 10300, Thailand

2. OUTLINE Introduction Material and Method Results Discussion and
Conclusion

3. INTRODUCTION cost Buoyancy force What is Hydrostatic Vesting?
How to use it?
Why I do this study?
cost
Buoyancy force

4. MATERIAL and MATHOD D(s)>D(w) D(s)<D(w)
Scales on resolution g
Sample holder
Bar frame
Metal platform
Sieve
Thermometer
Sample : Rubbers
D(s)>D(w)
D(s)<D(w)

5. Develop and create Hydrostatic Vesting Meter
Beaker
Basement
Bar frame
Sieve steel

6. Samples for density testing
Rubbers
EPDM   natural urethane PVC
(ethylene-propylene diene )

7. Experimental procedure
The experimental procedure was done in room temperature = oc , H2O = 23.0 oc, density of fluid at 23.0 oc = g/cm3.
The samples were dipped in alcohol for against air bubbles occurring from rubber.
All parts of equipments were consisted to be the Hydrostatic Vesting meter and then placed it on the balances.

8. Each sample of 8 was weighed by turn in air {Wt
Each sample of 8 was weighed by turn in air {Wt. (a)} and after that dipped it in ¾ water height of beaker and weighted {Wt.(fl)}
Handy equipment
Standardize equipment

9. RESULTS
EPDM PVC
Natural urethane

10. Table. 1 Standard deviation of rubber samples

11. DISSCUSSION Balance steady
The samples’ density testing indicated that if there is more spongy rubber from the samples the accuracy will less. (natural rubber)
Handy equipment demonstrated the standard deviation less than standardize equipment for testing urethane density. (urethane)
air bubbles
beaker size bar frame
Balance steady
difficulty diffusion sticky air bubbles
Balance steady

12. CONCLUSION
Beaker size 8.5 x 6.8 cm 2 pieces, 10 x 6.8 cm 2 pieces and 9.5 x 8.5 cm 1 pieces which bigger than beaker of standardize equipment.
The bar frame of handy equipment used copper cable size 0.13 mm (which smaller than the standardized equipment) by reference ASTM (vol.3) E 12 which smaller than standardize equipment.
In conclusion, the results showed that this invention has sufficient to be used that were the less of standard deviation and significantly difference at 0.01.

13. Thanks for your attentions