CphT Measurement Conversion     Last updated on 2010     1     29, a full moon day;

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also see: multiplier;

Ampule vs. Vial

- stripe around the neck facilitates opening;
- swab the ampule's neck with alcohol swab;
- use of thumb and index finger for grasping the top;
- with other hand, hold the bottom of ampule;
- quick snap;
- use sterile needle & syringe to transfer solution;

   vial WHICH contains solution

- by using sterile needle, avoid corning, so do 45 needle's angle to rubber surface;
- gradually the needle up 90 angle;
- draw volume of air into the vial, and then turn the vial upside down;
- fill solution into the sterile syringe, and then transfer the solution;

   vial WHICH contains powder

- transfer diluent into vial;
- swirl the vial till drug is dissolved;
- use sterile needle & syringe to transfer solution;

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;



16 fl oz, aka 1 pt;

2 pt, aka 1 qt;

4 qt, aka 1 gal (US);



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;



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;



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:

100C temperature is

(a) 100F (b) 273K (c) 0F (d) 212F


Answer: 212F;



9C = 5F - 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;