Which scientific instrument was massively recalled in 2010 after it was discovered that its radiation shielding was defective, potentially exposing researchers to harmful levels of radiation?

Throughout history, scientific products have occasionally been recalled due to unexpected issues despite rigorous testing. These recalls have shaped safety regulations and testing protocols in the scientific industry. Test your knowledge about one of the most significant scientific product recalls that changed laboratory practices forever.

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Thermo Fisher Scientific's TruNarc handheld analyzers
Oxford Instruments' Pulsar NMR spectrometers
Bruker Corporation's S2 RANGER X-ray spectrometers
Agilent Technologies' 7900 ICP-MS systems