How laboratory specifications accidentally become single-vendor, what to write instead, which protective clauses survive a challenge, and the one requirement that removes most arguments at technical evaluation.
Every public university and polytechnic in Bangladesh buys laboratory equipment through e-GP, under the Public Procurement Act and Rules. The rules are clear that a technical specification should describe what the item must do rather than name a manufacturer, and that where a brand name is genuinely unavoidable it must be followed by the words or equivalent. The practical difficulty is that a specification loose enough to be competitive is often loose enough to admit equipment that cannot teach the course.
Nobody sets out to write a restrictive specification. It happens through convenience, and it happens in five recognisable ways.
The most defensible specification for teaching equipment is written from the syllabus rather than from a catalogue. Instead of describing a machine, describe what a student must be able to do with it.
So rather than a paragraph of dimensions, write: the unit shall allow students to determine the coefficient of performance of a vapour compression cycle, with measured pressures and temperatures at compressor inlet and outlet, condenser outlet and evaporator inlet, and shall permit the evaporator load to be varied and the effect observed. That sentence is competitive, it is unambiguous at evaluation, and no bidder can supply a rig that misses the point of the experiment while technically complying.
Then attach the experiment list as a schedule and require bidders to state which supplied item performs each experiment. That list is your real requirement; everything else is a means to it.
Fixed numbers copied from a datasheet exclude. Ranges with a stated minimum invite competition and still protect the course.
Give a minimum and allow better. Specify accuracy or measurement uncertainty rather than a sensor brand, because that is what determines whether a student's result is meaningful. Where a capacity matters, state the specimen or duty the machine must handle rather than its rating. One caution: do not set a minimum so low that a toy qualifies. The test of a good minimum is that you would be content to receive equipment sitting exactly on it.
These are the requirements that keep quality up without naming anyone, and they are the ones most often left out.
A specification is only as good as the evaluation method published with it. State which requirements are mandatory and pass or fail, which are scored, and on what basis. Vague criteria produce disputes, disputes produce delays, and delays produce a laboratory that misses a semester.
The single most useful requirement to add is a clause by clause compliance sheet. Require every bidder to respond to each specification line with comply or not comply, plus a page reference to their own catalogue or datasheet supporting the claim. It costs the bidder an hour. It removes most of the argument at technical evaluation, it makes a weak bid visible immediately, and it gives the evaluation committee a document it can defend if the award is questioned.
Finally, be honest about the risk that the lowest evaluated price carries when the specification is weak. In that combination the process rewards the cheapest compliant bidder, and compliance was defined by a document the department wrote in a hurry. The specification is the only stage at which a department controls what it will eventually own, so it deserves more time than the tender documents that follow it.