THE FOAM AMPOULE

The ampoule sat held between two strips of foam, transparent and small, with a grey powder at the bottom. Antônio found it in the box left by the environmental authority beside the bar's door. He had received three. One for the sink, one for the reservoir under the counter, one for whoever could pay for the reading linked to their own body. The copper bend stayed on the table, inside the folded shirt. Edna had not touched it since she arrived. Four minutes remained before the presentation, and the panel above the counter kept the band open, material received, origin pending. Antônio turned the ampoule against the kitchen light. The powder ran slowly along the glass. What does this measure, he asked. Edna read the label projected on the side of the box. It measures process residue in water for domestic use. If it comes out above the band, it opens a territorial counter-test. And shuts the bar. It can suspend food preparation until a new reading. The third bowl stayed covered near the stove. Mariana's corn had hardened at the edges. Antônio ran his finger over the lid without lifting the plate. On the street's public panel, Divina stopped in front of the window. Divina, the councilwoman who had helped push the datacenter agreement through the village meetings, held a market bag against her belly. She asked the community channel for the floor. The light beside her face came on. She saw the box of ampoules, saw Edna, saw the shirt around the copper. Then she closed her mouth and switched off the request. The street stayed hot. The panel called Edna by name. The presentation tray awaited her bodily authentication and the deposit of the part. Sales appeared on the image, seated in a refrigerated cabin, his collar dark with sweat still clinging to his neck. The operation accepts the delivery, he said. The classification depends on verifiable origin. Nael recognised the fold, said Antônio. Recognising doesn't enter the chain of custody, answered Sales. The part was retrieved after an irregular intervention. Edna looked at the ampoule. Her injured finger was covered by a medical film, yellowed at the tips. She took the box, removed the second tube and set it beside the sink. If the bar's line has the residue, the branch stops being informal maintenance, she said. It becomes part of a contamination to be investigated. Sales tilted his face closer to the screen. Do you have any objection to the sampling, madam. I'm proposing to measure the water that passes through the repair. Antônio opened the tap. The mug began to fill. Twenty-nine seconds, as before. The blade of water struck the aluminium bottom and rose too clear for the hunger it cost. Edna took the cap off the ampoule. She waited for the mug to reach halfway, poured the water into the tube up to the marked line and closed it hard. The grey powder spread in fine threads. She turned the glass seven times, slowly, until the water lost its transparency. The panel asked for the person responsible for the point of consumption. Antônio did not answer at once. Behind him, the cut refrigerator gave a crack. The motor was working to preserve two bottles and a remnant of ice bought from Valdo. If the reading opened a containment, he would lose the afternoon's sales. Perhaps the kitchen too. His son stayed lit on the presence dot in the capital. For three days the circle had not changed place. Are you sure, asked Antônio. Edna looked at the wrapped bend. Then at the covered bowl. No. He put his face before the panel. The bodily authentication travelled over his eyelids, went down along his jaw, accepted the authorisation. His name entered the counter-test request together with the bar's address. The water in the ampoule darkened before the indicated time. First a rust-coloured cloud. Then a green band clung to the bottom. Sales stopped speaking. The panel removed the bend from the classification queue and opened an environmental isolation window. The bar's water protection remained active until the official sampling. Below, another line appeared for Antônio. Food activity under observation. Sales suspended until confirmatory reading. He read it without blinking. The mug overflowed onto the counter, little water, but water drawn from the line that now accused him. Antônio closed the tap with his fingerprint. The stain reached the edge, fell to the floor and vanished into the dark sand between the boards. Divina came into the bar. She did not ask for the floor this time. She took one of the ampoules from the box, put it in her bag and went out through the kitchen, carrying the empty tube to the street where the houses began.