What kind of scientific testing and certification do these have?

The test certifications for these filters and - so far as I have been able to find - all other of the non-Samsung replacement filters are inferior. Samsung's certifications include NSF/ANSI 42 (which is frankly just chlorine taste and odor! most aftermarket filters meet only this test); NASF/ANSI 53 which is a test for Asbestos, Atrazine, Benzene, Lindane, Cabofuran, Cysts, Lead, Mercury, and P-Dichlorobenzene (Waterspecialist is certified NSF/ANSI 372 for lead only); and NSF/ANSI 401certified against Metrobamate, Atenolol, Carbamazapine, Trimethroprim, Linuron, Metolachlor, and DEET. You have decide whether these additional test certifications are worth the additional money or not, obviously; but these filters are not equivalent, tho they may be compatible.

Does this fit samsung rs27t5200sr

Hi, Thanks for your interest in our filter product. This model should be suitable for your model. If you have encountered any issue while installation, please feel free to contact us. Our support team will be very happy to provide any assistance to you. Kind Regards Mia Lauren Customer Service Rep

does this fit model rf29a9675ap/aa

Hi, Thanks for your interest in our filter product. This filter should be suitable for your model. If you have any other questions, please feel free to contact us. Enjoy the rest of your day! Kind Regards Mia Lauren Customer Service Rep

Does it fit samsung model rf23bb8900acaa?

Hi, Thanks for your interest in our filter product. This model should be suitable for your model. If you have encountered any issue while installation, please feel free to contact us by email or phone call. Our support team will be very happy to provide any assistance to you. Kind Regards Mia Lauren Customer Service Rep

Brand	Waterspecialist
Model Number	WS645A-3
Color	White
Product Dimensions	5.84 x 5.84 x 20.29 cm; 898.11 g
Material	Carbon Block
Item Weight	898 g

POTABLE_WATER_FILTER

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