A PHP Error was encountered

Severity: Warning

Message: Attempt to read property "CATEGORY_ID" on null

Filename: controllers/Welcome.php

Line Number: 119

Backtrace:

File: /home/oa2bi7rbtlkc/public_html/application/controllers/Welcome.php
Line: 119
Function: _error_handler

File: /home/oa2bi7rbtlkc/public_html/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Attempt to read property "CATEGORY_ID" on null

Filename: controllers/Welcome.php

Line Number: 120

Backtrace:

File: /home/oa2bi7rbtlkc/public_html/application/controllers/Welcome.php
Line: 120
Function: _error_handler

File: /home/oa2bi7rbtlkc/public_html/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Attempt to read property "CATEGORY_ID" on null

Filename: controllers/Welcome.php

Line Number: 130

Backtrace:

File: /home/oa2bi7rbtlkc/public_html/application/controllers/Welcome.php
Line: 130
Function: _error_handler

File: /home/oa2bi7rbtlkc/public_html/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Attempt to read property "CATEGORY_ID" on null

Filename: controllers/Welcome.php

Line Number: 131

Backtrace:

File: /home/oa2bi7rbtlkc/public_html/application/controllers/Welcome.php
Line: 131
Function: _error_handler

File: /home/oa2bi7rbtlkc/public_html/index.php
Line: 315
Function: require_once

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Miscellaneous Mass Transfer Lab - 20021

Model No:

    CMT-22: Wetted Wall Column

    CMT-23: Vapor Liquid Equilibrium Set-up

    CMT-24: Mass Transfer with & without Chemical Reaction (Solid-Liquid)

    CMT-25: Experimental Water Cooling Tower

    CMT-26: Adsorption in packed bed