Sericulture - Directorate General of Employment & Training

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LEVEL – 2
1. Module Name: Acid treatment technician.
2. Sector: Sericulture Egg Production.
3. Code: SER - 216
4. Entry Qualification Minimum of 10 th standard and 17 years of age.
5. Terminal
Competency:
After completion of the course, the trained person would be
able to operate Acid Treatment Bath and treatment of bivoltine
silkworm eggs to produce good quality laying.
6. Duration: 150 hours
7. Preface: Bivoltine silkworm eggs need to be acid treated to prevent
diapause. This involved usage of Hydrochloric acid (HCl) and
knowledge to treat the eggs at a particular temperature and
duration. Therefore, skill is need for the technician to do the
acid treatment safely without damaging the eggs and person
8. Job Profile: Employable in grainage as an acid treatment technician.
9. Course Content
Practical Competencies
Under Pinning Knowledge (Theory)
‣ Identification of diapause and nondiapause
eggs.
non-diapause in silkworm
‣ Basic knowledge of Diapause and
eggs.
‣ Demonstration of different
equipments used for acid treatment
of silkworm eggs and their
maintenance.
‣ Use of hydrochloric acid, fixing
specific gravity in relation to
temperature and dilution.
‣ Use of hydrometer, thermometer
and audio-visual timer.
‣ Preparation of acid treatment bath
‣ Pre-treatment of eggs sheets with
2% formalin to fix eggs to sheet.
‣ Hot and cold acid treatment of loose
‣ Morphology and handling of eggs.
‣ Importance of 2% formalin
solution treatment to egg sheets.
‣ Knowledge about acid treatment
bath, hydrometer, thermometer,
timer, etc.
‣ Acid treatment of eggs (Loose and
sheet). Hot acid and cold acid
treatment. Acid treatment after
short term and long term cold
storage.
‣ Brief properties of Hydrochloric
acid. Dilution of hydrochloric acid
to know specific gravity and
relation of temperature on specific
gravity. Effects of HCl on human
beings.
‣ Knowledge about safety aspects of