Hardness Test Kit - TK3012-Z
Summary
TLDRThis video demonstrates how to perform a total hardness drop count test using the endpoint ID procedure. It emphasizes the importance of gathering an accurate sample, rinsing the vial to prevent contamination, and using a white background for better visibility during the test. Key steps include adding five drops of hardness buffer, one scoop of hardness indicator powder, and swirling the vial after each addition. The titration process is completed when the sample color changes from red to blue, indicating the presence or absence of hardness in the water sample.
Takeaways
- 🧪 Accurate sampling is crucial for precise results in the hardness drop count test.
- 🚿 Rinse the vial three times with the test sample to avoid contamination from previous titrations.
- 👁️ Hold the vial at eye level to ensure you collect an accurate sample.
- 📏 Place the vial on a level surface and check it again at eye level for precision.
- 🔳 Using a white background, like a paper towel, helps in observing color changes more clearly.
- 💧 Add 5 drops of hardness buffer by holding the bottle vertically to ensure consistent drop size.
- 🔄 Swirl the vial after adding each reagent to ensure proper mixing of the chemicals.
- 🧂 Add one scoop of hardness indicator powder and dissolve it fully by swirling; the sample turning red indicates hardness is present.
- 🔵 If the sample turns blue, no hardness is present, and the test is complete.
- 🧴 Use the correct titrant and sample size, and hold the titrant bottle vertically for consistent drop size during titration. The test is complete when the color changes from red to blue.
Q & A
What is the first step in performing a total hardness drop count test according to the endpoint ID procedure?
-The first step is to gather an accurate sample. It's important to rinse the vial three times with the sample to minimize contamination.
Why is it important to rinse the vial before gathering the sample?
-Rinsing the vial three times with the sample to be tested minimizes the chance of contamination from a previous titration.
How can you ensure the sample size is accurate?
-Hold the vial close to eye level when filling it, and then place it on a level surface, bending down to eye level to verify accuracy.
What is the purpose of using a white background during the titration?
-A white background, like a cabinet tray or white paper towel, provides contrast, making it easier to see the color changes during the titration.
What is added after gathering the sample, and how should it be applied?
-Five drops of hardness buffer are added. The buffer should be applied by holding the bottle vertically to ensure consistent drop size.
Why is it important to swirl the vial after adding each reagent?
-Swirling ensures that the reagents are properly mixed, which is critical for the accuracy of the test.
What happens after adding the hardness indicator powder?
-The sample is swirled to dissolve the powder. If the sample turns red, it indicates that hardness is present. If the sample turns blue, it indicates no hardness is present, and the titration is complete.
What is the next step if the sample turns red after adding the hardness indicator powder?
-The next step is to perform the titration by adding titrant drop by drop and swirling the vial after each drop until the sample changes from red to blue.
Why is it important to check the equivalency and sample size on the titrant bottle?
-The titrant bottle is manufactured for specific equivalency and sample sizes, so it is essential to verify that you are using the correct titrant for the sample size.
When is the titration complete according to the endpoint ID procedure?
-The titration is complete when the sample changes color from red to blue, indicating that the hardness has been neutralized.
Outlines
🧪 Introduction to Hardness Drop Count Test Kit
This paragraph introduces the total hardness drop count test kit, highlighting the importance of following the endpoint ID procedures. It emphasizes that the first step is to gather an accurate sample. Even a small change in sample size can result in inaccurate results. Before collecting the sample, the vial should be rinsed three times with the sample to minimize contamination from previous titrations. Proper sampling technique is key to ensuring the accuracy of the test.
👀 Ensuring Accurate Sample Collection
In this section, the procedure for obtaining an accurate sample size is discussed. The vial should be held at eye level to assess the amount of sample collected. Once satisfied with the sample size, it should be placed on a level surface, and further checked at eye level. Using a white background, such as a cabinet tray or white paper towel, helps provide contrast to better observe the color changes during the drop count titration process.
🔵 Adding Hardness Buffer
This paragraph outlines the step of adding five drops of hardness buffer. The procedure requires holding the bottle vertically to ensure a consistent drop size. After adding the reagent, it’s important to swirl the vial to ensure proper mixing of the reagents.
🔬 Adding Hardness Indicator Powder
Here, the focus is on adding one scoop of hardness indicator powder. After the powder is added, swirling the vial ensures that it dissolves completely. If the sample turns red, it indicates the presence of hardness; if the sample turns blue, it means no hardness is present and the titration is complete.
🔄 Performing the Titration
This paragraph explains the titration process. The titrant bottle is labeled with the appropriate equivalency and sample size, and it's important to ensure you have the correct titrant and sample size for accurate results. The bottle contains a dropper, so it must be held vertically for consistent drops. After each drop of titrant, the vial should be swirled to properly mix the sample. The titration ends when the sample color changes from red to blue, indicating completion.
Mindmap
Keywords
💡Total hardness
💡Drop count test kit
💡Endpoint ID procedure
💡Sample size
💡Contamination
💡Hardness buffer
💡Hardness indicator powder
💡Titration
💡Titrant
💡Color change
Highlights
Gather an accurate sample, as the smallest change in sample size leads to inaccurate results.
Rinse the vial three times with the sample to minimize contamination from previous titrations.
Hold the vial at eye level to ensure accurate sample measurement, then place it on a level surface for verification.
Using a white background provides contrast to better observe color changes during titration.
Add five drops of hardness buffer, ensuring the bottle is held vertically for consistent drop size.
Swirl the vial after each reagent addition to ensure proper mixing.
Add one scoop of hardness indicator powder and swirl the vial to dissolve the powder completely.
If the sample turns red, hardness is present; if it turns blue, no hardness is present, ending the titration.
Ensure the correct titrant and sample size are used, as each bottle of titrant is labeled with its equivalency.
Hold the titrant bottle vertically to ensure consistent drop size during titration.
Swirl the vial after each drop of titrant to ensure the sample is properly mixed.
The titration process is complete when the sample changes from red to blue.
Proper procedure following the endpoint ID method ensures accurate total hardness results.
Swirling the sample ensures the even distribution of reagents throughout the titration process.
Accurate titrant drop size is essential for the consistency of the titration results.
Transcripts
this is a demonstration of a total
hardness drop count test kit using
endpoint ID
procedures the first step according to
the endpoint ID procedure is to gather
an accurate sample the smallest change
in sample size will lead to inaccurate
results before Gathering your sample
it's important to rinse the vial three
times with the sample to be tested this
minimizes the chance of contamination
from a previous titration
to get an accurate sample size you want
to hold the vial close to I level once
you feel you have an accurate sample
place the vial on a level surface and
bend down to eye level when performing a
drop count titration a white background
can provide contrast to better see the
color changes a cabinet tray or white
paper towel can provide that
contrast
The Next Step according to the endpoint
ID procedure is to add five drops of
hardness
buffer the bottle contains a dropper tip
so it's important to hold the bottle
vertically to get a consistent drop
size after the addition of each reagent
it's important to swirl the vial to make
sure the reagents are properly
mixed
The Next Step according to the endpoint
ID procedure is to add one scoop of
hardness indicator
powder after the addition of the powder
swirl the vial to ensure the powder is
completely dissolved in this case the
sample has turned red indicating that
hardness is present if the sample had
turned blue then no hardness is present
and the titration is
complete the next step according to the
endpoint ID procedure is to perform the
titration each bottle of tirant is
labeled with the equivalency and sample
size it was manufactured for it's
important to make sure you have the
proper titrant and the proper sample
size for this
titration the bottle of titrant contains
a dropper tip therefore it's important
to hold the bottle vertically to make
sure you get a consistent drop
size after the addition of each drop of
titrant you want to swirl the vial to
make sure the sample is properly
mixed according to the endpoint ID
procedure the titration is complete when
the sample has changed from red to
blue
تصفح المزيد من مقاطع الفيديو ذات الصلة
Determination of water hardness (titration)
WATER|Lecture 03|DETERMINATION OF HARDNESS OF WATER|ENGINEERING CHEMISTRY|PRADEEP GIRI SIR
Determination of Titratable Acidity (Lactic Acid) of a Milk Sample (IS 1479:1960)
Calcium and Magnesium ion concentration determination with EDTA titration
Proper use of a buret for a titration procedure
Session 2 Culturing Bacteria Part 1 Plating on to agar plates
5.0 / 5 (0 votes)