Tristel plc provided earnings guidance for the year 2021. The company excepts that the upturn in sales activity, combined with a gross margin maintained at 80% and tight control over operating costs, will translate into sales of £31 million (2020: £31.7 million) and pre-tax profit (before share-based payments and the exceptional item explained below) of £5.5 million (2020: £7.1 million) for the year.