WHAT IS THIS LESSON ABOUT?
The lesson deals on how to follow procedure in using measuring devices and instruments. This includes the proper way of using measuring devices and instruments and procedure in cleaning, sanitizing and calibrating equipment and instruments.
WHAT WILL YOU LEARN?
At the end of the lesson, you should be able to:
1. observe strictly the methods / practices of using measuring devices and instruments according to manufacturer’s specifications and workplace requirements;
2. clean, wipe dry and stow measuring devices and instruments after use to ensure conformity with the workplace requirements;
and
3. accurately follow procedure in using measuring devices and instruments.
WHAT DO YOU ALREADY KNOW?
Let’s find out how much you already know regarding procedures in using standard measuring devices and instruments.
Pre-Test
Multiple Choice
Directions: Carefully read the questions and choose the best answer from the options given. Write the letter of the correct answer on your answer sheet.
1. Which is the proper way of using weighing scale?
a. Calibrate the weighing scale.
b. Put the food to be weighed on the plate of the weighing scale.
c. Record the obtained weight d. All of these
3. To get the accurate measurement of salt you measured with a measuring cup, which of the following will you do?
a. level-off with a metal spatula or straight-edged knife b. do not level
c. bring measuring cup at eye level d. compress the content
4. Where should you keep measuring devices?
a. Inside a wet or moist cabinet b. Inside a clean dry cabinet c. In plastic bags
d. On top of the table
5. When recording the weight measured with a weighing scale, what unit of measurement is used?
Device - formed by design or invented for specific use Graduation - means to divide into or mark with degrees Instrument - a tool or utensil
Workplace - a place where any work is carried on
Proper Way of Using Measuring Devices and Instruments 1. Measuring Devices
a. Weighing Scales
Put the food on the plate of weighing scale, record the reading in grams or kilograms.
b. Measuring Cups for Dry Ingredients
Gently spoon the ingredients into the cup, piling high or filling the cup to overflowing, then level off with a metal spatula or straight-edged knife.
c. Measuring Cups for Liquid Ingredients
Pour liquids on level surface of measuring cups. Have the measuring lines at eye level to be sure of the exact measurement.
2. Measuring Instruments a. Salinometer.
1. Prepare the brine solution.
2. Pour the solution on the cylinder.
3. Dip salinometer on the solution, let it float.
4. Record the reading by degrees salinometer.
5. Wash the salinometer after using.
b. Thermometer
1. Dip thermometer in hot liquids or solid foods.
2. Record the reading by degrees Centigrade or degrees Fahrenheit
3. Wash after using.
c. Refractometer
Place a drop of sap on the refractometer, close the cover and quickly read the scale (the line at the top of the darker area). Reading should be taken to the nearest 0.1 percent. It should be dried with tissue paper and rinsed with water after each reading.
Procedure in Cleaning, Sanitizing, Calibrating and Stowing Equipments and Instruments
1. Wash the equipment or instrument with soap.
2. Rinse with clean water.
3. Sanitize by dipping or soaking in a sanitizing solution.
4. Remove from the sanitizing solution.
5. Rinse with clean water.
6. Dry thoroughly (air dry).
7. Check the accuracy of each equipment and instruments.
8. Pack and keep in a clean cabinet.
LET US REMEMBER
All methods/practices of using measuring devices and instruments must strictly be observed according to the manufacturer’s specifications and workplace requirements in order to ensure that the desired measurements will be accurately obtained.
Valuing
Clean all the measuring devices and instruments after use.
HOW MUCH HAVE YOU LEARNED?
Post Test
A. Multiple Choice
Directions: Carefully read the questions and choose the best answer from the options given. Write the letter of the correct answer in your test booklet.
1. Which is the proper way of using a weighing scale?
a. Calibrate the weighing scale.
b. Put the food to be weighed on the plate of the weighing scale.
c. Record the obtained weight d. All of these measuring cup, which of the following will you do?
a. level-off with a metal spatula or straight-edged knife b. do not level
c. bring measuring cup at eye level d. compress the content
4. Where should you keep measuring devices?
a. Inside a wet or moist cabinet b. Inside a clean dry cabinet c. In plastic bags
d. On top of the table
5. When recording the weight measured with a weighing scale, what unit
Directions: Put a check () if the statement is correct and cross () if it is not. Write the correct answers in your answer sheet.
1. Observe strictly the methods / practices of using measuring devices according to manufacturer’s specifications and workplace requirements.
2. Clean, wipe, dry and stow measuring devices and instruments after use to ensure conformity with the workplace.
3. Workplace is a place where any work is carried on.
4. Have the measuring lines at the eye level to be sure of the exact measurement.
5. Level off dried ingredients with your hand in measuring them.
LET US APPLY WHAT YOU HAVE LEARNED
Practical Test with Interview, Observation and Oral Questioning:
Activity: Show the proper way of using and cleaning of the measuring devices and instruments present on your table. Answer the questions your teacher will ask you orally.
RESOURCES:
The following resources are needed:
Measuring devices
o Weighing scales of various capacities and sensitivities o Measuring cups of varying capacities for dry ingredients o Measuring cups of varying capacities for liquid ingredients o Measuring spoons
Measuring instruments o Salinometer
o Thermometer of varying temperature range o Refractometer of varying range (0-90B)
REFERENCES:
Calmorin, Laurentina P., Post Harvest Fisheries, Mandaluyong City, Philippines, National Bookstore Inc., 2006
Lagua, Rosalinda T., Food Preservation for Filipinos, 1977 Mendoza, Leonarda, Fishery Arts for Secondary Schools, 1980
Answer Key
Lesson 1.
A. 1. a 6. d B. 1.
2. a 7. a 2.
3. a 8. a 3.
4. c 9. b 4.
5. b 10.a 5.
Lesson 2.
1. d 1. False
2. a 2. True
3. c 3. True
4. c 4. False
5. d 5. True
Lesson 3.
1. 2. 3. 4. 5.