This document provides an overview of a learning session on testing the colorfastness of textiles to chlorinated pool water based on ISO 105-EO3. It discusses the scope, principles, apparatus, reagents, procedures, and reporting requirements for this test method. The test involves treating textile specimens with sodium hypochlorite solutions of different concentrations mimicking chlorinated pool water and assessing any change in color. Three chlorine concentrations are specified - 50mg/L and 100mg/L for swimwear and 20mg/L for accessories. The document outlines how to prepare the test solutions, select and prepare test specimens, conduct the 1-hour treatment and assess any color change. Results are reported with details to identify the sample
Colorfastness to Laundering: Accelerated
An accelerated test (45 minutes or less) produces color and surface changes similar to that produced by five hand or home launderings.
Colorfastness to Laundering: Accelerated
An accelerated test (45 minutes or less) produces color and surface changes similar to that produced by five hand or home launderings.
Lab dip is a process by which buyers supplied swatch is matched with the varying dyes percentage in the laboratory with or without help of “DATA COLOR”
Lab dip plays an important role in shade matching & and detaching the characteristics of the dyes and chemicals are to be used in the large scale of production. So this is an important task before bulk production.
Analysis BOD is an important parameter in identifying the extend of pollution in a water body. This presentation explains the various methods of BOD analysis as per the APHA manual
this presentation showsChemical oxygen demand (mg O2 / lit.) which is the amount of oxygen required for reacting with the organic (harmful) matter present in waste water, both soluble or insoluble (suspended) matters, producing CO2 and H2O. In this experiment, organic compounds are oxidized to carbon dioxide and water by a boiling acid dichromate solution
Materials
Waste water sample.
Distilled water.
Potassium dichromate (K2Cr2O7).
Sulfuric acid (H2SO4).
Silver sulfate (Ag2SO4).
Mercuric sulfate (HgSO4).
and procedures
Take a sample of waste water (2.5 ml) in a standard test tube.
Add K2Cr2O7 (1.5 ml) to the above sample.
Add 3.5 ml of a solution containing H2SO4, Ag2SO4 and HgSO4 to the above mixture. This solution is known as "digestion solution" which is prepared by adding Ag2SO4 and HgSO4 to 1 kg of H2SO4.
Repeat the above procedure with a sample of distilled water (2.5 ml) in another test tube.
Heat the two test tubes in the reactor for 2 hrs. at a temperature of 150 ºC and after that leave them to cool.
Use the spectrophotometer to detect the COD (in mg/lit.) value for the waste water sample.
some notes
K2Cr2O7 is used as an oxidizing agent (source of oxygen needed to react with organic matters).
H2SO4 is a digesting agent which helps in decomposing the organic matters to be easily reacted with oxygen.
Ag2SO4 is used to reduce the volatility of the organic matters exist in the waste water sample and keep them in liquid phase. If those matters vaporized, the measured value of COD will be incorrect.
HgSO4 is used to avoid oxidation of 〖𝐶𝑙〗^− if it exists in wastewater as salt. This will lead to high misleading value of COD since 〖𝐶𝑙〗^− is oxidized by K2Cr2O7 into Cl2.
The distilled water sample is used as a blank sample which allows the calibration of the spectrophotometer. The COD value for this sample is zero.
also shows Biological oxygen demand (mg O2 / lit.) is the amount of oxygen required to be used up by bacteria so as to decompose the waste matters in a liter of wastewater. This test may need at least 3 months to be finished: the standard test defines it as BOD5 as it is performed within 5 days only. During those 5 days, about 70 – 80% of degradation is achieved.
In the COD test we completely oxidize the wastes, whether biodegradable (i.e. can be decomposed by bacteria) or non – biodegradable.
In the BOD test we oxidize the biodegradable wastes only.
Determination of the BOD5 of undiluted samples of sewage containing high levels of industrial pollutants may be considerably impaired(damaged) by the presence of inhibitors or toxic substances. Measurements can only be carried out after the sample has been diluted with dilution water that contains a sufficient amount of nutrients and microorganisms in order to reduce the interfering substances to an acceptable level.
Determination of the BOD5 of undiluted samples of sewage containing high levels of industrial pollutants may be considerably impaired(damaged) by the presence of CO
The Impact of Artificial Intelligence on Modern Society.pdfssuser3e63fc
Just a game Assignment 3
1. What has made Louis Vuitton's business model successful in the Japanese luxury market?
2. What are the opportunities and challenges for Louis Vuitton in Japan?
3. What are the specifics of the Japanese fashion luxury market?
4. How did Louis Vuitton enter into the Japanese market originally? What were the other entry strategies it adopted later to strengthen its presence?
5. Will Louis Vuitton have any new challenges arise due to the global financial crisis? How does it overcome the new challenges?Assignment 3
1. What has made Louis Vuitton's business model successful in the Japanese luxury market?
2. What are the opportunities and challenges for Louis Vuitton in Japan?
3. What are the specifics of the Japanese fashion luxury market?
4. How did Louis Vuitton enter into the Japanese market originally? What were the other entry strategies it adopted later to strengthen its presence?
5. Will Louis Vuitton have any new challenges arise due to the global financial crisis? How does it overcome the new challenges?Assignment 3
1. What has made Louis Vuitton's business model successful in the Japanese luxury market?
2. What are the opportunities and challenges for Louis Vuitton in Japan?
3. What are the specifics of the Japanese fashion luxury market?
4. How did Louis Vuitton enter into the Japanese market originally? What were the other entry strategies it adopted later to strengthen its presence?
5. Will Louis Vuitton have any new challenges arise due to the global financial crisis? How does it overcome the new challenges?
Lab dip is a process by which buyers supplied swatch is matched with the varying dyes percentage in the laboratory with or without help of “DATA COLOR”
Lab dip plays an important role in shade matching & and detaching the characteristics of the dyes and chemicals are to be used in the large scale of production. So this is an important task before bulk production.
Analysis BOD is an important parameter in identifying the extend of pollution in a water body. This presentation explains the various methods of BOD analysis as per the APHA manual
this presentation showsChemical oxygen demand (mg O2 / lit.) which is the amount of oxygen required for reacting with the organic (harmful) matter present in waste water, both soluble or insoluble (suspended) matters, producing CO2 and H2O. In this experiment, organic compounds are oxidized to carbon dioxide and water by a boiling acid dichromate solution
Materials
Waste water sample.
Distilled water.
Potassium dichromate (K2Cr2O7).
Sulfuric acid (H2SO4).
Silver sulfate (Ag2SO4).
Mercuric sulfate (HgSO4).
and procedures
Take a sample of waste water (2.5 ml) in a standard test tube.
Add K2Cr2O7 (1.5 ml) to the above sample.
Add 3.5 ml of a solution containing H2SO4, Ag2SO4 and HgSO4 to the above mixture. This solution is known as "digestion solution" which is prepared by adding Ag2SO4 and HgSO4 to 1 kg of H2SO4.
Repeat the above procedure with a sample of distilled water (2.5 ml) in another test tube.
Heat the two test tubes in the reactor for 2 hrs. at a temperature of 150 ºC and after that leave them to cool.
Use the spectrophotometer to detect the COD (in mg/lit.) value for the waste water sample.
some notes
K2Cr2O7 is used as an oxidizing agent (source of oxygen needed to react with organic matters).
H2SO4 is a digesting agent which helps in decomposing the organic matters to be easily reacted with oxygen.
Ag2SO4 is used to reduce the volatility of the organic matters exist in the waste water sample and keep them in liquid phase. If those matters vaporized, the measured value of COD will be incorrect.
HgSO4 is used to avoid oxidation of 〖𝐶𝑙〗^− if it exists in wastewater as salt. This will lead to high misleading value of COD since 〖𝐶𝑙〗^− is oxidized by K2Cr2O7 into Cl2.
The distilled water sample is used as a blank sample which allows the calibration of the spectrophotometer. The COD value for this sample is zero.
also shows Biological oxygen demand (mg O2 / lit.) is the amount of oxygen required to be used up by bacteria so as to decompose the waste matters in a liter of wastewater. This test may need at least 3 months to be finished: the standard test defines it as BOD5 as it is performed within 5 days only. During those 5 days, about 70 – 80% of degradation is achieved.
In the COD test we completely oxidize the wastes, whether biodegradable (i.e. can be decomposed by bacteria) or non – biodegradable.
In the BOD test we oxidize the biodegradable wastes only.
Determination of the BOD5 of undiluted samples of sewage containing high levels of industrial pollutants may be considerably impaired(damaged) by the presence of inhibitors or toxic substances. Measurements can only be carried out after the sample has been diluted with dilution water that contains a sufficient amount of nutrients and microorganisms in order to reduce the interfering substances to an acceptable level.
Determination of the BOD5 of undiluted samples of sewage containing high levels of industrial pollutants may be considerably impaired(damaged) by the presence of CO
The Impact of Artificial Intelligence on Modern Society.pdfssuser3e63fc
Just a game Assignment 3
1. What has made Louis Vuitton's business model successful in the Japanese luxury market?
2. What are the opportunities and challenges for Louis Vuitton in Japan?
3. What are the specifics of the Japanese fashion luxury market?
4. How did Louis Vuitton enter into the Japanese market originally? What were the other entry strategies it adopted later to strengthen its presence?
5. Will Louis Vuitton have any new challenges arise due to the global financial crisis? How does it overcome the new challenges?Assignment 3
1. What has made Louis Vuitton's business model successful in the Japanese luxury market?
2. What are the opportunities and challenges for Louis Vuitton in Japan?
3. What are the specifics of the Japanese fashion luxury market?
4. How did Louis Vuitton enter into the Japanese market originally? What were the other entry strategies it adopted later to strengthen its presence?
5. Will Louis Vuitton have any new challenges arise due to the global financial crisis? How does it overcome the new challenges?Assignment 3
1. What has made Louis Vuitton's business model successful in the Japanese luxury market?
2. What are the opportunities and challenges for Louis Vuitton in Japan?
3. What are the specifics of the Japanese fashion luxury market?
4. How did Louis Vuitton enter into the Japanese market originally? What were the other entry strategies it adopted later to strengthen its presence?
5. Will Louis Vuitton have any new challenges arise due to the global financial crisis? How does it overcome the new challenges?
Want to move your career forward? Looking to build your leadership skills while helping others learn, grow, and improve their skills? Seeking someone who can guide you in achieving these goals?
You can accomplish this through a mentoring partnership. Learn more about the PMISSC Mentoring Program, where you’ll discover the incredible benefits of becoming a mentor or mentee. This program is designed to foster professional growth, enhance skills, and build a strong network within the project management community. Whether you're looking to share your expertise or seeking guidance to advance your career, the PMI Mentoring Program offers valuable opportunities for personal and professional development.
Watch this to learn:
* Overview of the PMISSC Mentoring Program: Mission, vision, and objectives.
* Benefits for Volunteer Mentors: Professional development, networking, personal satisfaction, and recognition.
* Advantages for Mentees: Career advancement, skill development, networking, and confidence building.
* Program Structure and Expectations: Mentor-mentee matching process, program phases, and time commitment.
* Success Stories and Testimonials: Inspiring examples from past participants.
* How to Get Involved: Steps to participate and resources available for support throughout the program.
Learn how you can make a difference in the project management community and take the next step in your professional journey.
About Hector Del Castillo
Hector is VP of Professional Development at the PMI Silver Spring Chapter, and CEO of Bold PM. He's a mid-market growth product executive and changemaker. He works with mid-market product-driven software executives to solve their biggest growth problems. He scales product growth, optimizes ops and builds loyal customers. He has reduced customer churn 33%, and boosted sales 47% for clients. He makes a significant impact by building and launching world-changing AI-powered products. If you're looking for an engaging and inspiring speaker to spark creativity and innovation within your organization, set up an appointment to discuss your specific needs and identify a suitable topic to inspire your audience at your next corporate conference, symposium, executive summit, or planning retreat.
About PMI Silver Spring Chapter
We are a branch of the Project Management Institute. We offer a platform for project management professionals in Silver Spring, MD, and the DC/Baltimore metro area. Monthly meetings facilitate networking, knowledge sharing, and professional development. For event details, visit pmissc.org.
New Explore Careers and College Majors 2024.pdfDr. Mary Askew
Explore Careers and College Majors is a new online, interactive, self-guided career, major and college planning system.
The career system works on all devices!
For more Information, go to https://bit.ly/3SW5w8W
2. Prepared by
Md. Rahmat Ullah
B.Sc in Textile Engineering (BUFT)
M.Sc in Environmental Science and Management (BUP)
Sr. Textile Testing Engineer(Colorfastness & Flammability)
TUV Rheinland Bangladesh .Pvt. Ltd.
3. Give a look for today’s session
• Scope & Principle
• Apparatus
• Reagents
• Value of “V= ml….?”
• Test specimen
• Procedure
• Test report
4. Scope & principle
• Scope : This part of ISO Specifies a method for determining the
resistance of the color of textile of all kinds and in all forms to the
action of active chlorine in concentrations such as are used to disinfect
swimming-pool water. Three alternative test conditions are specified.
The active chlorine concentration of 50mg/l and 100 mg/l are intended
for swimwear. The active chlorine concentration of 20mg/l are
intended for accessories such as beach robes and towels.
• Principle : A specimen of the textile is treated with a weak chlorine
solution of a given concentration and dried. The change in color of the
specimen is assessed by comparison with the grey scale or
instrumentally. Three alternative test condition are specified.
5. Apparatus
• Suitable mechanical device
• pH meter
• Grey scale for assessing change in color
• Spectrophotometer
• Analytical balance
7. Value of “v= ml…”
Step 1:
• Solution 1: 20 ml of Sodium hypochlorite (NaOCl) solution to 1L
• Solution 2: 14.35 g of Potassium dihydrogenphosphate (KH2PO4) per L.
• Solution 3: 20.05 g of Disodium hydrogenphosphate dihydrate (Na2HPO4.2H2O) or disodium hydrogenphosphate
dodecahydrate (Na2HPO4.12H2O) per L.
Step 2:
Strarch 1 gm (Boiled Water)
25 ml of solution 1 + Potassium iodide (KI) 1 gm + starch Boiled solution(as a indicator)
Titrate the liberated iodine with Sodium thiosulfate Solution ( Na2S2O3)=0.1 mol/l.
Let the Volume of Sodium thiosulfate Solution ( Na2S2O3) required be “V= ml….?”
pH = 7.50 ± 0.05.(If necessary,adjust pH using sodium hydroxide (NaOH) or acetic acid (CH3COOH)=0.1 mol/l )
8. Value of “v= ml…”
Containing 100mg of active chlorine per litre :
• 705.0/V ml Solution 1
• 100ml solution 2
• 500ml solution 3 (dilute to 1 L. with grade 3 water)
Containing 50mg of active chlorine per litre :
• 705.0/2V ml Solution 1
• 100ml solution 2
• 500ml solution 3 (dilute to 1 L. with grade 3 water
Containing 20mg of active chlorine per litre :
• 705.0/5V ml Solution 1
• 100ml solution 2
• 500ml solution 3 (dilute to 1 L. with grade 3 water
9. Test Specimen
• If the textile to be tested is fabric, use a specimen measuring.
• If the textile to be tested is yarn, knit it into fabric and use a specimen measuring.
• If the textile to be tested is loose fibre, comb and compress enough of it to form a
sheet measuring, determine the mass of the fiber and sew it onto a piece of
polyester or polypropylene cloth to support the fiber.
• Sample Size : (40 ± 2) mm x (100 ± 2) mm
10. Procedure
• Each specimen shall be tested in a separate container in the mechanical device.
Immerse the specimen in the sodium hypochlorite solution of liquor ratio
100:1,ensuring that the specimen is thoroughly wetted. Close the container and
agitate at (27 ± 2)° C for 1hour in darkness.
• Remove the specimen from the container, squeeze or hydroextract it, and dry it by
hanging it in air at room temperature in subdued light.
• Assess the change in color of each specimen with reference to the original
specimen by comparison with grey scale or instrumentally.
11. Test Report
• A reference to this part of ISO 105(ISO 105-EO3)
• All details necessary for the identification of the sample tested
• The numerical grey scale rating or instrument assessment for the change in color of
each specimen
• The concentration of active chlorine used
