Select your 4x Magnification Microscope Objective from the list below 

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Product ID	Brand	Tube Length, Barrel size  & Thread size	Grade	Special     Functions	Microscope Grade        Suitability	Specifications
Biological Upright Microscope Objectives
8213		160 Narrow barrel RMS	Achromatic	BF	Level 2 or below	N.A 0.1 CC 0.17 mm W.D 37.384 mm
UM1034B		Infinity RMS	Achromatic	BF	Level 3 or below	N.A 0.1 CC 0.17 mm W.D 18.89 mm
7889		160 RMS	Semi Plan Achromatic	BF	Level 4 or below	N.A 0.1 NCC W.D 23.13 mm
10016		Infinity RMS	Semi Plan Achromatic	BF	Level 4 or below	N.A 0.1 CC 0.17 mm W.D 21 mm
0899		Infinity RMS	Plan Achromatic	BF	Level 5 or below	N.A 0.11 NCC
0307		Infinity RMS	Plan Achromatic	BF	Level 5 or below	N.A 0.1 CC 0.17 mm W.D 21 mm
10007		160 RMS	Plan Achromatic	BF	Level 5 or below	N.A 0.1 CC 0.17 mm W.D 17.9 mm
Biological Inverted Microscope Objectives
Biological Upright Fluorescence Microscope Objectives
Biological Inverted Fluorescence Microscope Objectives
Materials Upright Microscope Objectives
0320		Infinity RMS	Plan Achromatic	BF, POL, Long working distance	Level 5 or lower	N.A 0.1 NCC W.D 26.1 mm
Materials Inverted Microscope Objectives
Polarising Microscope Objectives
0915		Infinity RMS	Plan Achromatic	BF Polarising	Level 5 or below	N.A 0.1 CC 0.17 mm W.D 12.1 mm
10032		160 RMS	Plan Achromatic	BF Polarising	Level 5 or below	N.A 0.1 CC 0.17 mm W.D 17.9 mm
0250		160 RMS	Plan Achromatic	BF Polarising	Level 5 or below	N.A 0.1 NCC
0320		Infinity RMS	Plan Achromatic	BF, POL, Long working distance	Level 5 or lower	N.A 0.1 NCC W.D 26.1 mm