Updated in 2564 : on 2020: 4 : 17 : CphT Measurement Conversion ;

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also see: multiplier;

CphT calculation no. 90:

Avoid potential "corning", WHEN pushing sterile needle through vial's rubber stopper ["lid" is not a usage here], sterile needle's angle to rubber surface should be approximately

(a) 45°
(b) 72°
(c) 90°
(d) 100°

Answer: 45°;

CphT calculation no. 113:

Among the following G sizes, which needle might cause "corning" most likely?

(a) 23 G
(b) 20 G
(c) 16 G
(d) 13 G
 

Answer: 13 G ; Remark: opposite to capsule size;

Apothecary

16 fl oz, aka 1 pt;

2 pt, aka 1 qt;

4 qt, aka 1 gal (US);

Avoirdupois

1 gr, aka 64.8 mg, aka 0.0648 g;

437.5 gr, aka 1 oz;

16 oz, aka 1 lb;

CphT calculation no. 35:

Capsule sizes are volume in ml, and capsule size 000 is

(a) the biggest (b) the smallest (c) 5.000 ml (d) 0.0005 ml

Answer: the biggest, and 1.37 ml;

CphT calculation no. 36:

Capsule size 1 is

(a) 1.0ml (b) 0.1ml (c) 0.5ml (d) 5.0ml

Answer: 0.5ml;

Capsule size

CphT calculation no. 115:

Which is the largest capsule size among following sizes?

(a) size 000
(b) size 0
(c) size 2
(d) size 5
 

Answer: size 000; Remark: opposite to needle size;

Household

20 drops, aka 1 milliliter;   Drop cannot be accurately measured, because fluid type may vary, because syringe's needle size may vary, ... ; However, ml can be measured accurately;

5 ml, aka 1 tsp;

15 ml, aka 1 tbsp; aka 3 tsp;

8 fl oz, aka 1 cup [small];

phT calculation no. 39:

For accurately transferring of volume < 5ml, which device should be used:

(a) pipet (b) jar (c) graduated cylinder (d) volumetric flask

Answer: pipet;

Glass pipets can accurately transfer 1, 2, 5, 10, 25 ml of liquid; Micro-pipets are also available to measure 1~20, 1~100, 1~200, 1~1000 micro-liters aka 10^-6 l;

Syringe sizes can be 0.5 ml ~ 60 ml;

Liquid Metric

1000 ml, aka 1 L, aka 10 dl;

phT calculation no. 38:

For measuring small volume, which device should be used:

(a) disposable syringe (b) graduated cylinder (c) volumetric flask (d) spatula

Answer: disposable syringe;

Ratio concentration

1:1000 = 1mg/ml;

1:100 = 10mg/ml;

1:10 = 100mg/ml;

NS = Normal Saline = (900mg/100ml), aka 0.9% NaCl aka Na in mg, Cl in ml;

Solid Metric

1000 g, aka 1 kg;

1000 mg, aka 1 g;

Systems

1 kg, aka 2.2 lb;

1 oz, aka 28.35 g;

30 ml [rounded from ^⌐29.57^¬ ml], aka 1 fl.oz.;

33.8 fl oz, aka 1 L;

454 gm [rounded from ^⌐453.59^¬  ], aka 1 lb;

480 ml [rounded from ^⌐473^¬ ml], aka 1 pt;

phT calculation no. 40:

100°C temperature is

(a) 100°F (b) 273°K (c) 0°F (d) 212°F

Answer: 212°F;

Temperature

9°C = 5°F - 160;

Remark: mb "millibar by heterodyned effect" pressure based temperature is not available in ACT1 languages ... for ACT2 and ACT3, must learn oriental languages ... ;

phT calculation no. 19:

WHEN re-starting laminar flow hood, how long CphT should wait?

(a) 1 minute (b) 30 minutes (c) 1 day (d) 30 days

HEPA [high efficiency particulate air] filter removes particles > 0.3 microns [0.3 μm], to purify air flow in work area, so laminar flow hoods are built [approx. 1 laminar flow covers work surface by uniform velocity of 33meter/min]; Laminar flow hood should be operating continuously. Assume that its blower was broken, or it was turned off for changing filter, or it was off for saving energy at close-time-period, so WHEN re-starting time, CphT turns it on, and waits for 30 minutes for purifying air flow in work area.

phT calculation no. 37:

Either analytical balance or electronic balance should be used if measuring wt

(a) less than 120 mg (b) less than 120g (c) more than 120g (d) more than 120kg

Answer: less than 120mg;

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