This question is aimed at the faculty members and laboratory technicians as they are expected to act as a facilitator on any experimental task, be it simple or unfamiliar, of the students. Laboratory technicians “check who gets the lab equipment and reagents into the dispensing area of the chemical warehouse”.
Name the committee or the department that monitors chemical hygiene and safety in your respective institution. Do you see them check and visit
As for the side of the faculty members: "We work together with the laboratory technicians for the laboratory management. According to them, “The FTS in our school is designated for the hygiene of the laboratory, who schedules the cleaning hours at the laboratory to prevent damage or accidents.
How often do you check the storage cabinet and containers of your reagents? This aims to find out the habit that they have in monitoring the cabinets
Are the entire reagent bottles labeled with the correct chemical name, including the date of purchase and expiration date? It is expected that all the
One hundred percent of the respondents answered "Yes" because all the chemicals and reagents are properly labeled because this is the "standard procedure in handling and keeping the chemicals present in the laboratory." Also, as part of standard procedure, “we check and inspect all deliveries of reagent and apparatus before acceptance. We ensure that reagent bottles are labeled with the correct chemical name and formula, including the purchase date and expiration date.” However, a negative practice was observed by a faculty member that "Most of the reagents are untouched and unopened, unfortunately we do not use reagents."
Are the solid reagents dispensed in wide-mouthed containers?
Do all the concentrated acids and bases have a separate storage area from other reagents? This question tries to investigate the actual set-up for this
They are classified as corrosive and it is recommended to place them in a corrosive storage cabinet separately or in secondary containment (Oregon State University: Environmental Health and Safety, 2018). Respondents from large schools responded "Yes" as they have a larger storage area, but actually not a separate room for acids, but a separate storage cabinet. Not only that, but they "follow the standards of PDEA to hold controlled reagents" like hydrochloric acid.
According to them, "they properly separate acids from bases to avoid accidents, especially during earthquakes". For small schools, they do separate all the acids and bases from other reagents, but also in the same storage cabinet.
Are there warning labels on the containers of chemicals? Labels with extensive information such as warning signs of possible hazards, complete the identity
The main containers of liquid reagents should be the strongest and well chosen.
Are the liquid reagents dispensed in drip-proof lip bottles? The primary containers of the liquid reagents must be the sturdiest and choosing a well-made
Only forty-three percent of respondents ensured the use of a compatibility table in the organization of reagents in the laboratory. According to the mean score, the group of students and the group of chemistry teachers/technicians are at the same level of performance regarding handling and storage of reagents. The above reports are more concerned with the practices involved in the handling and management of reagents by respondent groups in the case of distribution. labor of laboratory technicians and expenditure on the part of chemistry students and teachers.
Reviewing the responses from the chemistry teachers and laboratory technicians in the interview part and depending on the researcher's observation, the result shows that the campus with an existing certification to follow international standardization possesses order and a systematic approach to chemical storage and handling. Looking back at the interview data and the researcher's observation, it was found that there is indeed a need to impose GHS to prevent the following bad practices:. This concludes that there is no significant difference between the means of chemistry students and chemistry teachers and laboratory technicians, although it is relatively clear that the data values for the teacher and technician group are more spread over a wide range.
Question 1: How do you dispose the different solid wastes after each experiment? Solid wastes in this question pertain to the solid reagents
Extent of practice regarding the disposal of waste from the experiments and from the storage area and the significant difference between students and teachers/technicians. The fourth objective is to study the level of laboratory practices of chemistry students and teachers/technicians regarding the disposal of chemical waste. Below is the set of interview questions prepared for both the students and the chemistry teachers/lab technicians to review their practices focusing on waste removal from the laboratory experiments, storage and dispensing areas.
This corresponds to the remaining and expired solid reagents awaiting treatment where, as stated by a laboratory technician, “We strictly follow DENR guidelines on waste disposal and we separate them appropriately.” Unfortunately, for campuses without lab manuals, they have expressed a problem to the effect of, “We don't have good ways to dispose of our waste. Only after the experiment are they thrown into the sink with running water.” The following also applies to the expired reagents: “They are simply kept in the storage room, because we still do not have an accredited waste collector for chemicals.” A response from one of the small schools was about throwing it away after the experiment and considering that “we use a minimal amount of reagents during the experiment; we discharge it into a drain with running water.” Our instructor provided a separate bin for us to deposit the solid waste we used,” one of the students commented.
Question 2: How do you dispose the different liquid wastes after each experiment? Liquid wastes in this question pertain to the liquid reagents
Their remarks all referred to a "trash bin" or a "container box" to put them. In addition, a practice was brought that "After the laboratory activity, our professor asked us to clean our table well and pack the chemical. waste in a paper. To prevent problems, we wrote labels that the chemical is harmful and to throw away the waste , then we threw it in the trash can".
These were separated according to DENR's strict regulation, which they are complying with. One teacher exposed that "their liquid waste is also disposed of in the same way as water, without even neutralizing it". Moreover, from a small campus with a small laboratory: "We use reagents in a minimal amount during the experiment and thus only throw them into a drain with running water," according to a laboratory technician. This examination resulted in two common responses and these were: 67% said, "There is a sink provided inside the lab, so we just pour it in there and use the faucet installed in it to wash the lab equipment." Along with, 33% said: “In liquid waste disposal, we have a waste bottle given by the laboratory technicians.
How do you dispose all the accumulated laboratory wastes? Are they collected at a specified time by a legitimate laboratory waste collector? May
Another revelation was that the majority of the teachers are unaware or not curious about the disposal of laboratory waste. According to the result of the survey and interview, the chemistry teacher/technician in charge often explains to the students that the improper disposal of chemical waste can be dangerous to health and the environment. Most of the responsibility for this lies with the chemistry teachers and laboratory technicians.
Conversely, good reagent disposal practices are disclosed and observed at participating campuses. The full description and terms of this law can be found in the developed EMS manual of the researcher. In the meantime, the following photos are examples of good disposal practices from contributing campuses.
Do you observe a system or good laboratory management in your institution? Justify by pointing out your concerns when it comes on the following
Summary of answers in the interview on the extent of compliance with EMS In any organization, an evaluation or review of its system and methods that comes through all the people involved is a very important practice. The following questions provide a starting checklist for all those working in their institutions' chemistry laboratories and help them become more compliant with the requirements for environmental management systems. By collecting and studying the responses of the students, theirs seems to be more detailed compared to the latter responses.
Regarding the use of chemicals, comments of high importance are the following: "I think students need to be aware of the chemicals to be used and how harmful they are." "Some students don't use gloves when handling the reagents." and "I have no concerns in this area because the teacher makes sure to raise awareness about the correct handling of the chemical and informs us about its properties and dangers." For safety in the lab, these are the common answers: "Our teacher always makes sure we are equipped with the right safety equipment before we do the experiment." “Some students do not use lab coats during experiments. Others also bring food inside;” "They should fill the first aid kit in every classroom." "The chemistry lab is equipped with an emergency shower area, fire extinguisher, fire sprinklers, and emergency evacuation plan signage that prepares students for any accidents or disasters in the lab." They can be toxic and corrosive." "My concern is about the visual posters, infographics that are put up inside the lab, so that the students will not always ask what to do with the waste, so that we can manage ourselves, even if is basic knowledge.”
Do you have any recommendations on the management system in your chemistry laboratory?
The items in the questionnaire are examples of the basic requirements for an international standard. This means that as the degree of procedural awareness regarding the use of reagents and safety in the laboratory increases, so does the extent of compliance with EMS. The environmental management model generated above was based on the result in the problem of obtaining the significant relationship between procedural awareness and laboratory practice and the extent of compliance with EMS.
It is clearly shown that although use of chemicals has an insignificant correlation to compliance with EMS, it has a positive significant relationship with the rest of the variables, such as safety in the laboratory, handling and storage of reagents and disposal of laboratory waste. In this study, safety in the laboratory, handling and storage of reagents and disposal of laboratory waste can mediate so that the use of chemicals can change the compliance with EMS. Included in the team of PCOs are mechanical and civil engineers who assist with environmental planning.
See the classification of hazardous waste from the DENR and include their waste numbers in the list. Please specify the duties and responsibilities of your SO regarding safety during emergency situations and the existence of danger in your institution's chemistry laboratories.