QLA Capsule Sinkers

Capsule Sinkers from QLA

QLA offers the most extensive selection of tablet and capsule sinkers available from a single source. Our family of sinkers includes most configurations currently in use worldwide, including helical style, basket style, three-prong style and others.

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Part Number	Short Description	Price
CAPWHT-SV	3 Prong Capsule Sinker 316 SS	£28.99
CAPWHT-VK	3 Prong Capsule Sinker, Plastic	£26.63
BSK008-JP	8 Mesh Basket Sinker 316 SS .90 (22.9mm) L x .51 (12.9mm) W	£109.35
BSK008-01	8 Mesh Basket Sinker 316 SS 1.06 (26.9mm) L x .62 (15.7mm) W	£109.35
CUSBSK-ALF	Alfuzosin Hydrochloride Cylinder Sinker 316 SS	£183.29
CAPWHT-PC	Breath Film Sinker 316 SS	£66.87
CUSBSK-JP	Japanese Pharmacopeia Basket Sinker 316 SS	£154.73
CUSBSK-JPMAG	Magnetic Japanese Basket Sinker 316 SS	£292.25
CAPWHT-S99	O-Ring Sinker 316 SS	£25.82
CUSBSK-ROP	Ropinirole Cylinder Sinker 37mm L x 19mm D 316 SS	£183.29
CAPWHT-2S	Spiral Capsule Sinker 316 SS .84 (21.3mm) L x .37 (9.4mm) W	£27.10
CAPWHT-4S	Spiral Capsule Sinker 316 SS .84 (21.3mm) L x .385 (9.8mm) W	£27.10
CAPWHT-XLSS	Spiral Capsule Sinker 316 SS .885 (22.5mm) L x .465 (11.8mm) W	£40.36
CAPWHT-XS	Spiral Capsule Sinker 316 SS .885 (22.5mm) L x .575 (14.6mm) W	£49.03
CAPWHT-XLS	Spiral Capsule Sinker 316 SS 1.15 (29.2mm) L x .465 (11.8mm) W	£40.94
CAPWHT-LGMT	Spiral Capsule Sinker Orange PTFE Coated Music Wire	£63.58
CAPWHT-XSTEF	Spiral Capsule Sinker PTFE coated 316 SS .885 (22.5mm) L	£56.13
CAPWHT-02	Spiral Capsule Sinker PTFE Coated Music Wire .84 (21.3mm) L	£45.52
CAPWHT-04	Spiral Capsule Sinker PTFE Coated Music Wire .84 (21.3mm) L	£45.52
CAPWHT-LG	Spiral Capsule Sinker PTFE Coated Music Wire 1.10 (27.9mm) L	£49.28
CAPWHT-XL	Spiral Capsule Sinker PTFE Coated Music Wire 1.15 (29.2mm) L	£49.28
CAPWSC-01S	Spiral Capsule Sinker with Screw on Cap 316 SS .9 (22.9mm) L	£90.50
CAPWST-15	Spring Style Capsule Sinker 316 SS .61 (15.5mm) L	£41.65
CAPWST-18	Spring Style Capsule Sinker 316 SS .71 (18mm) L	£42.83
CAPWST-19	Spring Style Capsule Sinker 316 SS .76 (19.3mm) L	£44.12
CAPWST-23	Spring Style Capsule Sinker 316 SS .91 (23mm) L	£45.29
CAPWST-31	Spring Style Capsule Sinker 316 SS 1.22 (31mm) L	£46.68
CAPWHT-TR	Time Release Capsule Sinker 316 SS	£31.22
CAPWHT-U01	U Shaped Sinker 1.024 (26mm) length (fits Capsule Sizes 0 and 1), 316 SS	£85.91

Features

Inevitably, home-made sinkers tend not to be reproducible and so commercially available sinkers are quite popular. The choice of sinker will depend on the tablet or capsule.

Sinker Size - The sinker should have minimal surface contact with the tablet as this can affect the dissolution rate. Sinkers are available in different sizes to accommodate most capsule/tablet dimensions.

Sinker Weight - Should be heavy enough to ensure that the tablet sinks to the bottom of the vessel and doesn’t move for the duration of the test.

PTFE Coated Sinkers - Can be used where there may be a reaction between steel and the tablet. They also work well with magnetic retrievers.

Uncoated - 316 stainless steel sinkers are more durable than coated sinkers.

Basket Sinkers - Ideal for coin shaped tablets but care should be taken that the outer coating of the tablet does not clog the mesh.

Wire Spirals - Should be as wide as practically possible to avoid clogging which would affect the dissolution rate.

Specifications

Basket Sinker Specifications

Part Number	Style	Material	Inside Diameter	Inside Length	Wire Diameter	Max Capsule Size
CUSBSK-JP	Basket, JP	316 SS	11.9 mm	25.4 mm	1.00 mm	00
BSK008-01	Basket, 8 Mesh	316 SS	15.7 mm	26.9 mm	0.71 mm	000
BSK008-JP	Basket, 8 Mesh	316 SS	12.9 mm	22.9 mm	0.71 mm	1
SNK008-VK	Basket, 8 Mesh	316 SS	20.2 mm	12.7 mm	0.71 mm	00
SNK010-VK	Basket, 10 Mesh	316 SS	20.2 mm	12.7 mm	0.64 mm	00
SNK020-VK	Basket, 20 Mesh	316 SS	20.2 mm	12.7 mm	0.41 mm	00
SNK040-VK	Basket, 40 Mesh	316 SS	20.2 mm	12.7 mm	0.25 mm	00
SNK080-VK	Basket, 80 Mesh	316 SS	20.2 mm	12.7 mm	0.18 mm	00

Pronged Sinker Specifications

Part Number	Style	Material	Inside Diameter	Inside Length	Max Capsule Size
CAPWHT-VK	3 Prong	Nylon / PP	9.5 mm	25.4 mm	1 (min = 3)
MAGWHT-VK	3 Prong	Nylon / PP	9.5 mm	25.4 mm	1 (min = 3)
PartCAPWHT-SV	3 Prong	316 SS	7.0 mm	25.4 mm	1 (min = 3)

O-Ring Sinker Specifications

Part Number	Style	Material	Inside Diameter	Inside Length	Max Capsule Size
CAPWHT-S99	O-Ring	316 SS	5.8 mm	22.9 mm	0

Spiral Sinker Specifications

Part Number	Style	Material	Coating	Inside Diameter	Inside Length	Wire Diameter	Max Capsule Size	Number of Coils
CAPWHT-TR	Butterfly	316 SS	-	5.4 mm	9.5 mm	0.76 mm	-	-
CAPWHT-PC	Strip Film	316 SS	-	10.8 mm	10.8 mm	0.94 mm	-	-
CAPWST-15	Helix	316 SS	-	5.0 mm	15.5 mm	0.41 mm	5	6
CAPWHT-04	Helix	Music Wire	PTFE	9.8 mm	21.3 mm	1.09 mm	0	5
CAPWHT-4S	Helix	316 SS	-	9.8 mm	21.3 mm	1.19 mm	0	5
CAPWHT-LG	Helix	Music Wire	PTFE	10.4 mm	27.9 mm	1.09 mm	000	6.5
CAPWHT-XL	Helix	Music Wire	PTFE	11.8 mm	29.2 mm	1.09 mm	000	5.5
CAPWHT-XLS	Helix	316 SS	-	11.8 mm	29.2 mm	1.09 mm	000	5.5
CAPWHT-XLSS	Helix	316 SS	-	11.8 mm	22.5 mm	1.09 mm	Special	3
CAPWST-18	Helix	316 SS	-	6.0 mm	18 mm	0.41 mm	3	8
CAPWST-19	Helix	316 SS	-	7.0 mm	19.3 mm	0.41 mm	2	8
CAPWHT-2S	Helix	316 SS	-	9.4 mm	21.3 mm	1.09 mm	0	8.5
CAPWHT-02	Helix	Music Wire	PTFE	9.4 mm	9.4 mm	1.19 mm	0	8.5
CAPWHT-XS	Helix	316 SS	-	14.6 mm	22.5 mm	1.19 mm	Special	8.5
CAPWST-23	Helix	316 SS	-	8.0 mm	23 mm	0.41 mm	0	9
CAPWST-31	Helix	316 SS	-	11.0 mm	31 mm	0.78 mm	000	11

Wire Specifications

Part Number	Style	Material	Wire Diameter
WIRESK-VK	Sinker Wire 50’	316 SS	0.81 mm

Capsule Size Guide

Capsule Size	Length	Diameter
000	26.1 mm	9.91 mm
00E	25.7 mm	8.53 mm
00	23.3 mm	8.53 mm
0E	23.1 mm	7.65 mm
0	21.7 mm	7.65 mm
1	19.4 mm	6.91 mm
2	18.0 mm	6.35 mm
3	15.9 mm	5.83 mm
4	14.3 mm	5.32 mm
5	11.1 mm	4.91 mm

Literature