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Clinical Chemistry Lab > Glass and Plasticware > Flashcards

Glass and Plasticware Flashcards

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0
Q

What are the categories of glasswares? (5)

A
  1. High thermal resistant glass
  2. High silica glass
  3. High alkali resistant
  4. Low actinic
  5. Soda lime
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1
Q

This type of glass contains borosilicate with low alkaline content. It is used in all purpose glassware.

A

High thermal resistance glass

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2
Q

The tolerance temperature and time for high thermal resistance glass.

A

510 degrees Celsius for a lengthy amount of time

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3
Q

What are the limitations of high thermal resistance glass? (3)

A
  1. Should not be cooled too quickly after heating
  2. May cloud after use with strong alkali
  3. It is subject to scratching
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4
Q

These brands of High thermal resistance glass are aluminosilicate in nature.

A

Corex and Vycor

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5
Q

Corex brand is commonly used for which types of laboratory apparatus?

A

Centrifuge tubes and thermometers.

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6
Q

What is the thermal capacity of Corex brand glasswares?

A

Stable up to 620 deg. Celsius up to 820 deg. Celsius for a short term use.

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7
Q

Which brand of High thermal resistance glass is resistant to scratching and subject to some acid or alkali attack at 100C?

A

Corex

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8
Q

Brand of high thermal resistance glass that is used for ashing and ignition.

A

Vycor

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9
Q

What is the temperature threshold of a Vycor brand high thermal resistant glass?

A

900-1200C

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10
Q

It is the most alkali resistant high thermal resistant glass brand.

A

Vycor

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11
Q

What is the percentage of silica in a High Silica Glass type of glassware?

A

96%

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12
Q

This glassware is used for cuvets and thermometers.

A

High Silica Glass

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13
Q

This type of glassware is radiation resistant, has good optical qualities, and could withstand decent temperature values.

A

High silica glass

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14
Q

This type of glassware contains aluminosilicate.

A

High Alkali Resistance Glass

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15
Q

High Alkali Resistance Glass is preferred to use with ______ _____.

A

Strong alkali.

16
Q

Modified TRUE or FALSE, if FALSE look for the incorrect word/words:

High Alkali Resistance suffers maximal attack compared to borosilicate.

A

False. Maximal -> Minimal

17
Q

What color is added to high thermal resistance to produce an integral part of the Low Acitinic Glass?

A

Red

18
Q

Enumerate the uses of Low Acitinic Glass. (3)

A

Bilirubin, carotene, and vitamin A analysis.

19
Q

Which type of glassware gives maximum protection to light-sensitive or photosensitive materials?

A

Low Actinic Glass

20
Q

Modified TRUE or FALSE, if FALSE look for the incorrect word/words:

Soda lime glass is the most inexpensive type of glassware.

A

True

21
Q

Modified TRUE or FALSE, if FALSE look for the incorrect word/words:

Plasticwares are highly resistant to corrosion and breakage but are expensive and non-disposable after each use.

A

False. Expensive -> inexpensive, non-disposable -> disposable

22
Q

Enumerate the major types of resins. (7)

A
  1. Polystyrene
  2. Polyethylene
  3. Polypropylene
  4. Tygon
  5. Teflon
  6. Polycarbonate
  7. Polyvinylchloride
23
Q

This plasticware is useful in both water and aqueous solutions.

A

Polystyrene

24
Q

Modified TRUE or FALSE, if FALSE look for the incorrect word/words:

Polystyrene is not recommended for use with acids, aldehydes, ketones, ethers, hydrocarbons, or essential oils.

A

True

25
Q

Discouraged time limit of storage when using polystyrene with alcohols and bases.

A

24 hours.

26
Q

Polyethylene is excellently chemical resistant to most of which substances, except:

A

Aldehydes, amines, ethers, hydrocarbons, and essential oils.

27
Q

Usage of this plasticware is limited to 24hrs in room tempt.

A

Polyethylene

28
Q

Polypropylene has the same chemical resistance as ______ __________.

A

Linear polyethylene.

29
Q

Modified TRUE or FALSE, if FALSE look for the incorrect word/words

Teflon is poor in chemical resistance to almost every chemical in the clinical lab.

A

False. Poor -> excellent

30
Q

This type of plasticware is very susceptible to damage by most chemicals.

A

Polycarbonate.

31
Q

Polycarbonate is resistant to which substances?

A

Water, aqueous salts, food, and inorganic acids.

Clinical Chemistry Lab (3 decks)

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