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Tetrads

Diameter:

N/A

Diameter:

N/A
Tetrads Cropped 1000x phase Contrast

Shape:

N/A

Septa:

N/A

Sulfur Granules:

N/A

Sheath:

N/A

Branching:

Description

Groupings of four cell clustered together. Associated with organic acid substrate, commonly favoring higher SRT (sludge retention time) values.

Type 1851 Filament Morphotype

Diameter:

.8-1 µm

Diameter:

0.8 x 1.4 µm
type 1851-like filaments cropped from 1000x phase contrast

Shape:

Rectangles

Septa:

Yes - often difficult to see

Sulfur Granules:

N/A

Sheath:

Yes

Branching:

Description

Often forms “bundles/twisted ropes”. Often has attached growth.

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Filament Type 0041/0675 Morphotype

Diameter:

1.0-2.2 µm

Diameter:

1.0-2.0 x 2.0-3.0 µm
Type 0041 0675

Shape:

Square

Septa:

Yes - Visible

Sulfur Granules:

N/A

Sheath:

Yes

Branching:

Description

“Grainy” appearance. Often has attached growth.

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Ryan Hennessy Wastewater Microbiology
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