英国采购需求：制氧机、制氧机、病人监护仪、中央监护系统、脉搏血氧仪、白细胞分析仪

I'm looking for a quote on an oxygen concentrator with specific features. The device should have an oxygen purity level of 93±3% and be capable of a flow rate ranging from 0 to 10 liters. Additionally, please ensure that the noise level is at or below 52dB. The input voltage requirement is 220V. Could you provide pricing and availability for this model? If there are any comparable options or packages, I'd love to hear about them too. Thanks!